A: [img=36x22]18032665f8783c3.png[/img]
B: [img=47x43]18032666007d4ac.png[/img]
C: [img=47x43]180326660936542.png[/img]
D: [img=47x43]1803266611709e9.png[/img]
举一反三
- 无阻尼单自由度振动系统中质量为M的质量块的振动位移函数为[img=166x25]18032665bd8a174.png[/img],则振动系统的动能为( )。 A: [img=173x43]18032665c8d5bc8.png[/img] B: [img=175x43]18032665d40cfaa.png[/img] C: [img=182x43]18032665de3e544.png[/img] D: [img=74x43]18032665e767ef3.png[/img]
- 已知随机变量X的分布函数为[img=136x49]1803b69024c8270.png[/img] ,则X的均值和方差分别为 A: E(X)=2, D(X)=4 B: E(X)=4, D(x)=2 C: [img=162x43]1803b6902cd8bfb.png[/img] D: [img=162x43]1803b69034d9ffd.png[/img]
- 定积分[img=221x51]18033eee829668c.png[/img]的值为( ). A: [img=38x43]18033eee8af6bce.png[/img] B: [img=38x43]18033eee9397948.png[/img] C: [img=47x43]18033eee9b020ba.png[/img] D: [img=38x43]18033eeea3f0356.png[/img] E: [img=47x43]18033eeeacdf0b5.png[/img] F: [img=36x22]18033eeeb59f2ca.png[/img]
- 定积分[img=221x51]1803b2167a3badb.png[/img]的值为( ). A: [img=38x43]1803b216826c0e5.png[/img] B: [img=38x43]1803b21689319b2.png[/img] C: [img=47x43]1803b2169118abf.png[/img] D: [img=38x43]1803b21698e9f79.png[/img] E: [img=47x43]1803b216a09d2ae.png[/img] F: [img=36x22]1803b216a888766.png[/img]
- 定积分[img=221x51]1803c76ea752b48.png[/img]的值为( ). A: [img=38x43]1803c76eb0859f4.png[/img] B: [img=38x43]1803c76eb97293e.png[/img] C: [img=47x43]1803c76ec17386f.png[/img] D: [img=38x43]1803c76eca2d117.png[/img] E: [img=47x43]1803c76ed357855.png[/img] F: [img=36x22]1803c76edbfcd2b.png[/img]
内容
- 0
密度为[img=91x26]180322aaf279a56.png[/img]的上半球面[img=130x30]180322aafbb65b5.png[/img]绕[img=9x14]180322ab04e3531.png[/img]轴的转动惯量等于 A: [img=47x43]180322ab0d6925c.png[/img] B: [img=47x43]180322ab1688bfc.png[/img] C: [img=47x43]180322ab1f97da6.png[/img] D: [img=27x22]180322ab28311c5.png[/img] E: [img=47x43]180322ab30d8c00.png[/img] F: [img=47x43]180322ab39ff667.png[/img] G: [img=47x43]180322ab42bb9a8.png[/img] H: [img=27x22]180322ab4b7def9.png[/img] I: [img=38x43]180322ab54c6229.png[/img] J: [img=38x43]180322ab5d37ad7.png[/img]
- 1
密度为[img=91x26]1803857545dd5ab.png[/img]的上半球面[img=130x30]180385754f02af8.png[/img]绕[img=9x14]180385755750120.png[/img]轴的转动惯量等于 A: [img=47x43]180385755f457db.png[/img] B: [img=47x43]18038575678db5d.png[/img] C: [img=47x43]180385756feccaa.png[/img] D: [img=27x22]180385757852fb3.png[/img] E: [img=47x43]1803857581e880b.png[/img] F: [img=47x43]180385758a828f7.png[/img] G: [img=47x43]180385759328bc0.png[/img] H: [img=27x22]180385759b022cc.png[/img] I: [img=38x43]18038575a36b53d.png[/img] J: [img=38x43]18038575ab65640.png[/img]
- 2
密度为[img=91x26]18030f9c67c11eb.png[/img]的上半球面[img=130x30]18030f9c6ff81a9.png[/img]绕[img=9x14]18030f9c78a6312.png[/img]轴的转动惯量等于 A: [img=47x43]18030f9c805985e.png[/img] B: [img=47x43]18030f9c8833e92.png[/img] C: [img=47x43]18030f9c90a187d.png[/img] D: [img=27x22]18030f9c9863c68.png[/img] E: [img=47x43]18030f9ca071250.png[/img] F: [img=47x43]18030f9ca895a7e.png[/img] G: [img=47x43]18030f9cb1daa08.png[/img] H: [img=27x22]18030f9cba420e9.png[/img] I: [img=38x43]18030f9cc36905c.png[/img] J: [img=38x43]18030f9ccbbf8f8.png[/img]
- 3
设[img=12x19]1803856aa9af9ce.png[/img]为上半球面[img=138x30]1803856ab1fa3f4.png[/img]的上侧,则曲面积分[img=398x48]1803856abe77d32.png[/img]的值为 A: [img=31x43]1803856ac6cbd08.png[/img] B: [img=31x43]1803856ad03c4bd.png[/img] C: [img=31x43]1803856ad942732.png[/img] D: [img=31x43]1803856ae251452.png[/img] E: [img=47x43]1803856aeb125be.png[/img] F: [img=47x43]1803856af444daf.png[/img] G: [img=47x43]1803856afcf723f.png[/img] H: [img=47x43]1803856b0501309.png[/img]
- 4
设[img=12x19]18030f8e80b5719.png[/img]为上半球面[img=138x30]18030f8e8855aa6.png[/img]的上侧,则曲面积分[img=398x48]18030f8e932e470.png[/img]的值为 A: [img=31x43]18030f8e9b6867d.png[/img] B: [img=31x43]18030f8ea3ea72d.png[/img] C: [img=31x43]18030f8eac8d76a.png[/img] D: [img=31x43]18030f8eb543dd2.png[/img] E: [img=47x43]18030f8ebd63a02.png[/img] F: [img=47x43]18030f8ec593d61.png[/img] G: [img=47x43]18030f8ece1af76.png[/img] H: [img=47x43]18030f8ed65cd5d.png[/img]