设[img=13x19]1803c1e63e0a807.png[/img]是圆柱面[img=100x26]1803c1e6463abf6.png[/img]与[img=95x23]1803c1e6503b245.png[/img]所围圆柱的外侧，则[img=267x48]1803c1e65be5868.png[/img]等于
A: [img=31x22]1803c1e66595e48.png[/img]
B: [img=40x22]1803c1e66d65c3e.png[/img]
C: [img=40x22]1803c1e675de3c2.png[/img]
D: [img=40x22]1803c1e67dccf24.png[/img]
E: [img=40x22]1803c1e685e301a.png[/img]
F: [img=40x22]1803c1e68ea0f2d.png[/img]
G: [img=40x22]1803c1e69773a14.png[/img]
H: [img=40x22]1803c1e69fcf2b2.png[/img]
I: [img=40x22]1803c1e6a8982c9.png[/img]
J: [img=49x22]1803c1e6b06fb85.png[/img]
A: [img=31x22]1803c1e66595e48.png[/img]
B: [img=40x22]1803c1e66d65c3e.png[/img]
C: [img=40x22]1803c1e675de3c2.png[/img]
D: [img=40x22]1803c1e67dccf24.png[/img]
E: [img=40x22]1803c1e685e301a.png[/img]
F: [img=40x22]1803c1e68ea0f2d.png[/img]
G: [img=40x22]1803c1e69773a14.png[/img]
H: [img=40x22]1803c1e69fcf2b2.png[/img]
I: [img=40x22]1803c1e6a8982c9.png[/img]
J: [img=49x22]1803c1e6b06fb85.png[/img]
举一反三
- 设[img=13x19]1803856dcb79737.png[/img]是圆柱面[img=100x26]1803856dd4e9a74.png[/img]与[img=95x23]1803856ddd3f6e9.png[/img]所围圆柱的外侧，则[img=267x48]1803856de8977ee.png[/img]等于 A: [img=31x22]1803856df0af4a3.png[/img] B: [img=40x22]1803856df8c861d.png[/img] C: [img=40x22]1803856e009dda2.png[/img] D: [img=40x22]1803856e09a9666.png[/img] E: [img=40x22]1803856e1275a94.png[/img] F: [img=40x22]1803856e1b05c6e.png[/img] G: [img=40x22]1803856e2434279.png[/img] H: [img=40x22]1803856e2c9c0c8.png[/img] I: [img=40x22]1803856e35779a2.png[/img] J: [img=49x22]1803856e3e86cc8.png[/img]
- 设[img=13x19]18030f91887aa57.png[/img]是圆柱面[img=100x26]18030f9190bf46f.png[/img]与[img=95x23]18030f9198caa29.png[/img]所围圆柱的外侧，则[img=267x48]18030f91a278826.png[/img]等于 A: [img=31x22]18030f91aadf149.png[/img] B: [img=40x22]18030f91b302b36.png[/img] C: [img=40x22]18030f91bb18085.png[/img] D: [img=40x22]18030f91c3ca99a.png[/img] E: [img=40x22]18030f91cbc05f0.png[/img] F: [img=40x22]18030f91d342525.png[/img] G: [img=40x22]18030f91db87ff9.png[/img] H: [img=40x22]18030f91e392b19.png[/img] I: [img=40x22]18030f91ec13a44.png[/img] J: [img=49x22]18030f91f49d7eb.png[/img]
- 设随机变量X服从均值为2的指数分布，X的分布函数为F(x)，数学期望为E(X)，方差为D(X)，则以下结果正确的是 A: [img=128x28]1802d3b369ab5fe.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]1802d3b372fb534.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]1802d3b37bbbf05.png[/img]
- 设随机变量X服从均值为2的指数分布，X的分布函数为F(x)，数学期望为E(X)，方差为D(X)，则以下结果正确的是 A: [img=128x28]18034b986fbc78a.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]18034b98781508a.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]18034b9880d080a.png[/img]
- 设随机变量X服从均值为2的指数分布，X的分布函数为F(x)，数学期望为E(X)，方差为D(X)，则以下结果正确的是 A: [img=128x28]18033e117e9725e.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]18033e11879f263.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]18033e1190d2ef2.png[/img]