某几何体的三视图如图所示，其中正（主）视图与侧（左）视图的边界均为直角三角形，俯视图的边界为直角梯
\u67d0\u51e0\u4f55\u4f53\u7684\u4e09\u89c6\u56fe\u5982\u56fe\u6240\u793a,\u5176\u4e2d\u6b63\uff08\u4e3b\uff09\u89c6\u56fe\u4e0e\u4fa7\uff08\u5de6\uff09\u89c6\u56fe\u7684\u8fb9\u754c\u5747\u4e3a\u76f4\u89d2\u4e09\u89d2\u5f62\uff0c\u4fef\u89c6\u56fe\u7684\u8fb9\u754c\u4e3a\u76f4\u89d2\u68afC \u8bd5\u9898\u5206\u6790\uff1a\u7531\u4e09\u89c6\u56fe\u53ef\u77e5\u8be5\u51e0\u4f55\u4f53\u662f\u4e00\u4e2a\u56db\u68f1\u9525,\u6839\u636e\u201c\u6b63\u4fa7\u7b49\u9ad8\uff0c\u6b63\u4fef\u7b49\u957f\uff0c\u4fa7\u4fef\u7b49\u5bbd\u201d\u7684\u89c4\u5219\uff0c\u5176\u4f53\u79ef\u4e3a
2007\u5e74\u4e03\u5e74\u7ea7\u6570\u5b66\u671f\u4e2d\u8bd5\u5377
\uff08\u672c\u5377\u6ee1\u5206100\u5206 \uff0c\u5b8c\u5377\u65f6\u95f490\u5206\u949f\uff09
\u59d3\u540d\uff1a \u6210\u7ee9\uff1a
\u4e00\u3001 \u586b\u7a7a\uff08\u672c\u5927\u9898\u5171\u670915\u9898\uff0c\u6bcf\u98982\u5206\uff0c\u6ee1\u520630\u5206\uff09
1\u3001\u5982\u56fe\uff1a\u5728\u6570\u8f74\u4e0a\u4e0eA\u70b9\u7684\u8ddd\u79bb\u7b49\u4e8e5\u7684\u6570\u4e3a \u3002
2\u3001\u7528\u56db\u820d\u4e94\u5165\u6cd5\u628a3.1415926\u7cbe\u786e\u5230\u5343\u5206\u4f4d\u662f \uff0c\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8868\u793a302400\uff0c\u5e94\u8bb0\u4e3a ,\u8fd1\u4f3c\u65703.0\u00d7 \u7cbe\u786e\u5230 \u4f4d\u3002
3\u3001\u5df2\u77e5\u5706\u7684\u5468\u957f\u4e3a50\uff0c\u7528\u542b\u03c0\u7684\u4ee3\u6570\u5f0f\u8868\u793a\u5706\u7684\u534a\u5f84\uff0c\u5e94\u662f \u3002
4\u3001\u94c5\u7b14\u6bcf\u652fm\u5143\uff0c\u5c0f\u660e\u752810\u5143\u94b1\u4e70\u4e86n\u652f\u94c5\u7b14\u540e\uff0c\u8fd8\u5269\u4e0b \u5143\u3002
5\u3001\u5f53a=\uff0d2\u65f6\uff0c\u4ee3\u6570\u5f0f \u7684\u503c\u7b49\u4e8e \u3002
6\u3001\u4ee3\u6570\u5f0f2x3y2+3x2y\uff0d1\u662f \u6b21 \u9879\u5f0f\u3002
7\u3001\u5982\u679c4amb2\u4e0e abn\u662f\u540c\u7c7b\u9879\uff0c\u90a3\u4e48m+n= \u3002
8\u3001\u628a\u591a\u9879\u5f0f3x3y\uff0d xy3+x2y2+y4\u6309\u5b57\u6bcdx\u7684\u5347\u5e42\u6392\u5217\u662f \u3002
9\u3001\u5982\u679c\u2223x-2\u2223=1\uff0c\u90a3\u4e48\u2223x-1\u2223= \u3002
10\u3001\u8ba1\u7b97\uff1a\uff08a\uff0d1\uff09\uff0d(3a2\uff0d2a+1) = \u3002
11\u3001\u7528\u8ba1\u7b97\u5668\u8ba1\u7b97\uff08\u4fdd\u75593\u4e2a\u6709\u6548\u6570\u5b57\uff09\uff1a = \u3002
12\u3001\u201c24\u70b9\u6e38\u620f\u201d\uff1a\u7528\u4e0b\u9762\u8fd9\u7ec4\u6570\u51d1\u621024\u70b9\uff08\u6bcf\u4e2a\u6570\u53ea\u80fd\u7528\u4e00\u6b21\uff09\u3002
2\uff0c6\uff0c7\uff0c8\uff0e\u7b97\u5f0f \u3002
13\u3001\u8ba1\u7b97\uff1a\uff08\uff0d2a\uff093 = \u3002
14\u3001\u8ba1\u7b97\uff1a\uff08x2+ x\uff0d1\uff09?\uff08\uff0d2x\uff09= \u3002
15\u3001\u89c2\u5bdf\u89c4\u5f8b\u5e76\u8ba1\u7b97\uff1a\uff082+1\uff09\uff0822+1\uff09\uff0824+1\uff09\uff0828+1\uff09= \u3002\uff08\u4e0d\u80fd\u7528\u8ba1\u7b97\u5668\uff0c\u7ed3\u679c\u4e2d\u4fdd\u7559\u5e42\u7684\u5f62\u5f0f\uff09
\u4e8c\u3001\u9009\u62e9\uff08\u672c\u5927\u9898\u5171\u67094\u9898\uff0c\u6bcf\u98982\u5206\uff0c\u6ee1\u52068\u5206\uff09
16\u3001\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\uff08 \uff09
\uff08A\uff092\u4e0d\u662f\u4ee3\u6570\u5f0f \uff08B\uff09 \u662f\u5355\u9879\u5f0f
\uff08C\uff09 \u7684\u4e00\u6b21\u9879\u7cfb\u6570\u662f1 \uff08D\uff091\u662f\u5355\u9879\u5f0f
17\u3001\u4e0b\u5217\u5408\u5e76\u540c\u7c7b\u9879\u6b63\u786e\u7684\u662f\u2026\u2026\u2026\u2026\u2026\u2026\u2026\uff08 \uff09
\uff08A\uff092a+3a=5 \uff08B\uff092a\uff0d3a=\uff0da \uff08C\uff092a+3b=5ab \uff08D\uff093a\uff0d2b=ab
18\u3001\u4e0b\u9762\u4e00\u7ec4\u6309\u89c4\u5f8b\u6392\u5217\u7684\u6570\uff1a1,2\uff0c4,8\uff0c16\uff0c\u2026\u2026\uff0c\u7b2c2002\u4e2a\u6570\u5e94\u662f\uff08 \uff09
A\u3001 B\u3001 \uff0d1 C\u3001 D\u3001\u4ee5\u4e0a\u7b54\u6848\u4e0d\u5bf9
19\u3001\u5982\u679c\u77e5\u9053a\u4e0eb\u4e92\u4e3a\u76f8\u53cd\u6570\uff0c\u4e14x\u4e0ey\u4e92\u4e3a\u5012\u6570\uff0c\u90a3\u4e48\u4ee3\u6570\u5f0f
|a + b| - 2xy\u7684\u503c\u4e3a\uff08 \uff09
A. 0 B.-2 C.-1 D.\u65e0\u6cd5\u786e\u5b9a
\u4e09\u3001\u89e3\u7b54\u9898\uff1a\uff08\u672c\u5927\u9898\u5171\u67094\u9898\uff0c\u6bcf\u98986\u5206\uff0c\u6ee1\u520624\u5206\uff09
20\u3001\u8ba1\u7b97\uff1ax+ +5
21\u3001\u6c42\u503c\uff1a\uff08x+2\uff09\uff08x\uff0d2\uff09\uff08x2+4\uff09\uff0d\uff08x2\uff0d2\uff092 \uff0c\u5176\u4e2dx=\uff0d
22\u3001\u5df2\u77e5a\u662f\u6700\u5c0f\u7684\u6b63\u6574\u6570\uff0c\u8bd5\u6c42\u4e0b\u5217\u4ee3\u6570\u5f0f\u7684\u503c\uff1a(\u6bcf\u5c0f\u98984\u5206,\u517112\u5206)
\uff081\uff09
\uff082\uff09 ;
(3)\u7531\uff081\uff09\u3001\uff082\uff09\u4f60\u6709\u4ec0\u4e48\u53d1\u73b0\u6216\u60f3\u6cd5\uff1f
23\u3001\u5df2\u77e5\uff1aA=2x2\uff0dx+1\uff0cA\uff0d2B = x\uff0d1\uff0c\u6c42B
\u56db\u3001\u5e94\u7528\u9898\uff08\u672c\u5927\u9898\u5171\u67095\u9898\uff0c24\u300125\u6bcf\u98987\u5206\uff0c26\u300127\u300128\u6bcf\u98988\u5206\uff0c\u6ee1\u520638\u5206\uff09
24\u3001\u5df2\u77e5\uff08\u5982\u56fe\uff09\uff1a\u6b63\u65b9\u5f62ABCD\u7684\u8fb9\u957f\u4e3ab\uff0c\u6b63\u65b9\u5f62DEFG\u7684\u8fb9\u957f\u4e3aa
\u6c42\uff1a\uff081\uff09\u68af\u5f62ADGF\u7684\u9762\u79ef
\uff082\uff09\u4e09\u89d2\u5f62AEF\u7684\u9762\u79ef
\uff083\uff09\u4e09\u89d2\u5f62AFC\u7684\u9762\u79ef
25\u3001\u5df2\u77e5\uff08\u5982\u56fe\uff09\uff1a\u7528\u56db\u5757\u5e95\u4e3ab\u3001\u9ad8\u4e3aa\u3001\u659c\u8fb9\u4e3ac\u7684\u76f4\u89d2\u4e09\u89d2\u5f62
\u62fc\u6210\u4e00\u4e2a\u6b63\u65b9\u5f62\uff0c\u6c42\u56fe\u5f62\u4e2d\u592e\u7684\u5c0f\u6b63\u65b9\u5f62\u7684\u9762\u79ef\uff0c\u4f60\u4e0d\u96be\u627e\u5230
\u89e3\u6cd5\uff081\uff09\u5c0f\u6b63\u65b9\u5f62\u7684\u9762\u79ef=
\u89e3\u6cd5\uff082\uff09\u5c0f\u6b63\u65b9\u5f62\u7684\u9762\u79ef=
\u7531\u89e3\u6cd5\uff081\uff09\u3001\uff082\uff09\uff0c\u53ef\u4ee5\u5f97\u5230a\u3001b\u3001c\u7684\u5173\u7cfb\u4e3a\uff1a
26\u3001\u5df2\u77e5:\u6211\u5e02\u51fa\u79df\u8f66\u6536\u8d39\u6807\u51c6\u5982\u4e0b\uff1a\u4e58\u8f66\u91cc\u7a0b\u4e0d\u8d85\u8fc7\u4e94\u516c\u91cc\u7684\u4e00\u5f8b\u6536\u8d395\u5143\uff1b\u4e58\u8f66\u91cc\u7a0b\u8d85\u8fc75\u516c\u91cc\u7684\uff0c\u9664\u4e86\u6536\u8d395\u5143\u5916\u8d85\u8fc7\u90e8\u5206\u6309\u6bcf\u516c\u91cc1.2\u5143\u8ba1\u8d39.
(1)\u5982\u679c\u6709\u4eba\u4e58\u8ba1\u7a0b\u8f66\u884c\u9a76\u4e86x\u516c\u91cc\uff08x5\uff09,\u90a3\u4e48\u4ed6\u5e94\u4ed8\u591a\u5c11\u8f66\u8d39\uff1f\uff08\u5217\u4ee3\u6570\u5f0f\uff09\uff084\u5206\uff09
(2)\u67d0\u6e38\u5ba2\u4e58\u51fa\u79df\u8f66\u4ece\u5174\u5316\u5230\u6c99\u6c9f\uff0c\u4ed8\u4e86\u8f66\u8d3941\u5143\uff0c\u8bd5\u4f30\u7b97\u4ece\u5174\u5316\u5230\u6c99\u6c9f\u5927\u7ea6\u6709\u591a\u5c11\u516c\u91cc\uff1f\uff084\u5206\uff09
27\u3001\u7b2c\u4e00\u5c0f\u961f\u4e0e\u7b2c\u4e8c\u5c0f\u961f\u961f\u5458\u641e\u8054\u6b22\u6d3b\u52a8\uff0c\u7b2c\u4e00\u5c0f\u961f\u6709m\u4eba\uff0c\u7b2c\u4e8c\u5c0f\u961f\u6bd4\u7b2c\u4e00\u5c0f\u961f\u591a2\u4eba\u3002\u5982\u679c\u4e24\u4e2a\u5c0f\u961f\u4e2d\u7684\u6bcf\u4e2a\u961f\u5458\u5206\u522b\u5411\u5bf9\u65b9\u5c0f\u961f\u7684\u6bcf\u4e2a\u4eba\u8d60\u9001\u4e00\u4ef6\u793c\u7269\u3002
\u6c42\uff1a\uff081\uff09\u6240\u6709\u961f\u5458\u8d60\u9001\u7684\u793c\u7269\u603b\u6570\u3002\uff08\u7528m\u7684\u4ee3\u6570\u5f0f\u8868\u793a\uff09
\uff082\uff09\u5f53m=10\u65f6\uff0c\u8d60\u9001\u793c\u7269\u7684\u603b\u6570\u4e3a\u591a\u5c11\u4ef6\uff1f
28\u3001\u67d0\u5546\u54c11998\u5e74\u6bd41997\u5e74\u6da8\u4ef75%\uff0c1999\u5e74\u53c8\u6bd41998\u5e74\u6da8\u4ef710%\uff0c2000\u5e74\u6bd41999\u5e74\u964d\u4ef712%\u3002\u90a3\u4e482000\u5e74\u4e0e1997\u5e74\u76f8\u6bd4\u662f\u6da8\u4ef7\u8fd8\u662f\u964d\u4ef7\uff1f\u6da8\u4ef7\u6216\u964d\u4ef7\u7684\u767e\u5206\u6bd4\u662f\u591a\u5c11\uff1f
\u6570\u5b66\u8bd5\u5377\u7b54\u6848
\u4e00\u30011\u3001 2\u300110\uff0dmn 3\u3001\uff0d5 4\u3001\uff0d1\uff0c2 5\u3001\u4e94\uff0c\u4e09 6\u30013
7\u30013x3y+x2y2\uff0d xy3 +y4 8\u30010\uff0c2 9\u3001\uff0d3a2+3a\uff0d2 10\u3001\uff0da6
11\u3001\uff0dx8 12\u3001\uff0d8a3 13\u3001\uff0d2x3\uff0dx2+2x 14\u30014b2\uff0da2 15\u3001216\uff0d1
\u4e8c\u300116\u3001D 17\u3001B 18\u3001B 19\u3001D
\u4e09\u300120\u3001\u539f\u5f0f= x+ +5 (1\u2019)
= x+ +5 (1\u2019)
= x+ +5 (1\u2019)
= x+4x\uff0d3y+5 (1\u2019)
= 5x\uff0d3y+5 (2\u2019)
21\u3001\u539f\u5f0f=\uff08x2\uff0d4\uff09\uff08x2+4\uff09\uff0d\uff08x4\uff0d4x2+4\uff09 (1\u2019)
= x4\uff0d16\uff0dx4+4x2\uff0d4 (1\u2019)
= 4x2\uff0d20 (1\u2019)
\u5f53x = \u65f6\uff0c\u539f\u5f0f\u7684\u503c= 4\u00d7\uff08 \uff092\uff0d20 (1\u2019)
= 4\u00d7 \uff0d20 (1\u2019)
=\uff0d19 (1\u2019)
22\u3001\u89e3\uff1a\u539f\u5f0f=x2\uff0d2x+1+x2\uff0d9+x2\uff0d4x+3 (1\u2019)
=3x2\uff0d6x\uff0d5 (1\u2019)
=3\uff08x2\uff0d2x\uff09\uff0d5 (2\u2019) \uff08\u6216\u8005\u7531x2\uff0d2x=2\u5f973x2\uff0d6x=6\u4ee3\u5165\u4e5f\u53ef\uff09
=3\u00d72\uff0d5 (1\u2019)
=1 (1\u2019)
23\u3001\u89e3\uff1a A\uff0d2B = x\uff0d1
2B = A\uff0d\uff08x\uff0d1\uff09 (1\u2019)
2B = 2x2\uff0dx+1\uff0d\uff08x\uff0d1\uff09 (1\u2019)
2B = 2x2\uff0dx+1\uff0dx+1 (1\u2019)
2B = 2x2\uff0d2x+2 (1\u2019)
B = x2\uff0dx+1 (2\u2019)
24\u3001\u89e3\uff1a\uff081\uff09 (2\u2019)
\uff082\uff09 (2\u2019)
\uff083\uff09 + \uff0d \uff0d = (3\u2019)
25\u3001\u89e3\uff1a\uff081\uff09C2 = C 2\uff0d2ab \uff083\u2019\uff09
\uff082\uff09\uff08b\uff0da\uff092\u6216\u8005b 2\uff0d2ab+a 2 \uff083\u2019\uff09
\uff083\uff09C 2= a 2+b 2 \uff081\u2019\uff09
26\u3001\u89e3\uff1a\uff0825\uff092 = a2 \uff081\u2019\uff09
a = 32 \uff081\u2019\uff09
210 = 22b \uff081\u2019\uff09
b = 5 \uff081\u2019\uff09
\u539f\u5f0f=( a)2\uff0d ( b) 2\uff0d( a2+ ab+ b2) \uff081\u2019\uff09
= a2\uff0d b2\uff0d a2\uff0d ab\uff0d b2 \uff081\u2019\uff09
=\uff0d ab\uff0d b2 \uff081\u2019\uff09
\u5f53a = 32\uff0cb = 5\u65f6\uff0c\u539f\u5f0f\u7684\u503c= \uff0d \u00d732\u00d75\uff0d \u00d752 = \uff0d18 \uff081\u2019\uff09
\u82e5\u76f4\u63a5\u4ee3\u5165\uff1a\uff088+1\uff09\uff088\uff0d1\uff09\uff0d\uff088+1\uff092 = \uff0d18\u4e5f\u53ef\u4ee5\u3002
27\u3001\u89e3\uff081\uff09\uff1a\u7b2c\u4e00\u5c0f\u961f\u9001\u7ed9\u7b2c\u4e8c\u5c0f\u961f\u5171\uff08m+2\uff09?m\u4ef6 (2\u2019)
\u7b2c\u4e8c\u5c0f\u961f\u9001\u7ed9\u7b2c\u4e00\u5c0f\u961f\u5171m?\uff08m+2\uff09\u4ef6 (2\u2019)
\u4e24\u961f\u5171\u8d60\u90012m?\uff08m+2\uff09\u4ef6 (2\u2019)
\uff082\uff09\uff1a\u5f53m = 2\u00d7102+4\u00d710=240 \u4ef6 (2\u2019)
28\u3001\u8bbe\uff1a1997\u5e74\u5546\u54c1\u4ef7\u683c\u4e3ax\u5143 \uff081\u2019\uff09
1998\u5e74\u5546\u54c1\u4ef7\u683c\u4e3a\uff081+5%\uff09x\u5143 \uff081\u2019\uff09
1999\u5e74\u5546\u54c1\u4ef7\u683c\u4e3a\uff081+5%\uff09\uff081+10%\uff09x\u5143 \uff081\u2019\uff09
2000\u5e74\u5546\u54c1\u4ef7\u683c\u4e3a\uff081+5%\uff09\uff081+10%\uff09\uff081\uff0d12%\uff09x\u5143=1.0164x\u5143 \uff082\u2019\uff09
=0.0164=1.64% \uff082\u2019\uff09
底面直角梯形的两底边长分别为1、2；直角腰长为2，
∴几何体的体积V=
| 1 |
| 3 |
| 1+2 |
| 2 |
故选C．
绛旓細A 璇曢鍒嗘瀽锛氱敱涓夎鍥鍙緱.鍘熸潵鐨勭洿鏂瑰浘鏄粡杩囪酱鎴潰鍒囨帀鐨勫崐涓渾閿.鎵浠ュ叾琛ㄩ潰绉槸涓涓鍦嗛敟鐨勫崐涓晶闈㈤潰绉紝鍗婂渾鐨勯潰绉拰涓涓笁瑙掑舰鐨勯潰绉粍鎴.鍗婁釜渚ч潰鐨勯潰绉负 .鍗婂渾鐨勯潰绉 .涓夎褰㈢殑闈㈢Н涓 .鎵浠ヨ鍑犱綍浣撶殑琛ㄩ潰绉负 .鏁呴堿.
绛旓細D 璇曢鍒嗘瀽锛氱敱涓夎鍥鍙煡锛岃鍑犱綍浣鏄笁鍒嗕箣涓涓鍦嗛敟锛屽叾浣撶Н涓 .
绛旓細鐢涓夎鍥鍙煡鍑犱綍浣鏄竴涓洓妫遍敟锛屼笖鍥涙１閿ョ殑涓鏉′晶妫变笌搴曢潰鍨傜洿锛岄珮涓1锛屽簳闈㈢洿瑙掓褰㈢殑涓ゅ簳杈归暱鍒嗗埆涓1銆2锛涚洿瑙掕叞闀夸负2锛屸埓鍑犱綍浣撶殑浣撶НV=13脳1+22脳2脳1=1锛庢晠閫塁锛
绛旓細鐢遍鎰忥紝璇鍑犱綍浣涓哄渾閿ョ殑14锛屽叾搴曢潰闈㈢Н涓14脳蟺脳22=蟺锛岄珮涓4锛屽垯鍏朵綋绉疺=13脳蟺脳4=43蟺锛屾晠閫塀锛
绛旓細鐢涓夎鍥鐭鍑犱綍浣鏄渾閿ョ殑涓閮ㄥ垎锛岀敱姝ｈ鍥惧彲寰楋細搴曢潰鎵囧舰鐨勫渾蹇冭涓120掳锛屽張鐢变晶瑙嗗浘鐭ュ嚑浣曚綋鐨勯珮涓4锛屽簳闈㈠渾鐨勫崐寰勪负2锛屸埓鍑犱綍浣撶殑浣撶НV=120360脳13脳蟺脳22脳4=169蟺锛庢晠閫夛細A
绛旓細鈭典富瑙嗗浘鍜屽乏瑙嗗浘鍧囦负杈归暱涓1鐨勭瓑杈逛笁瑙掑舰锛屸埓鍦嗛敟鐨勫簳闈㈠渾鍗婂緞鏄12锛屾瘝绾块暱鏄1锛屸埓搴曢潰鍛ㄩ暱涓合鈭翠晶闈㈢Н涓12蟺鈭靛簳闈㈢Н涓合r2=蟺4鈭村叏闈㈢Н鏄3蟺4锛庢晠绛旀鏄3蟺4锛
绛旓細鐢涓夎鍥鐭鍑犱綍浣涓烘涓夋１鏌憋紝鈭村鎺ョ悆鐨勭悆蹇冧负妫遍敟搴曢潰涓績杩炵嚎鐨勪腑鐐癸紝鏍规嵁搴曢潰绛夎竟涓夎褰㈣竟闀夸负23锛屸埓搴曢潰涓夎褰㈢殑涓績鍒伴《鐐圭殑璺濈涓232sin60掳=2锛屸埓鐞冪殑鍗婂緞R=22+22=22锛屸埓澶栨帴鐞冪殑琛ㄩ潰绉疭=4蟺脳8=32蟺锛庢晠绛旀鏄32蟺锛
绛旓細2(蟺锛 ) 鐢涓夎鍥鍙煡姝鍑犱綍浣撶殑琛ㄩ潰绉垎涓轰袱閮ㄥ垎锛氬簳闈㈢Н鍗充刊瑙嗗浘鐨勯潰绉负2 锛涗晶闈㈢Н涓涓涓瀹屾暣鐨勫渾閿ョ殑渚ч潰绉紝涓斿渾閿ョ殑姣嶇嚎闀夸负2锛屽簳闈㈠崐寰勪负1锛屾墍浠ヤ晶闈㈢Н涓2蟺锛庝袱閮ㄥ垎鍔犺捣鏉ュ嵆涓哄嚑浣曚綋鐨勮〃闈㈢Н锛屼负2(蟺锛 )锛
绛旓細鐢涓夎鍥鍙煡锛氳鍑犱綍浣撲负姝ｅ洓妫遍敟锛屽叾楂樹负4銆佸簳闈㈡槸涓涓杈归暱涓2鐨勬鏂瑰舰锛屾瘡涓晶闈㈡槸搴曡竟涓2銆侀珮涓22+12锛5鐨勭瓑鑵颁笁瑙掑舰锛庝簬鏄繖涓鍑犱綍浣撶殑琛ㄩ潰绉=22+4脳12脳2脳5=4+45锛庯紟鏁呯瓟妗堜负4+45锛
绛旓細鐢涓夎鍥鐭ワ細鍑犱綍浣鏄笁妫遍敟锛屼笖涓夋１閿ョ殑涓涓渚ч潰涓庡簳闈㈠瀭鐩锛屽鍥锛氣埖渚ц鍥炬槸杈归暱涓篴鐨勬涓夎褰紝鈭翠笁妫遍敟鐨勯珮涓32a锛屼笁妫遍敟鐨勫簳闈㈡槸杈归暱涓篴鐨勬涓夎褰紝鈭翠笁妫遍敟鐨勪綋绉疺=13脳12脳a脳a脳32脳32a=18a3锛庢晠閫夛細A锛
