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【单选题】
两端固定的等截面超静定梁,已知A端的转角为θA,则杆件的内力错误的是 ( )A.
MB=2iθA
B.
MA=4iθA
C.
QAB=－3iθA/l
D.
QBA=－6iθA/l
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皮皮学刷刷变学霸
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【简答题】简述软件测试的原则。
【简答题】A．They bought a lot of stuff for him. B．They held a party for him. C．They let him stay with them rent free. D．They prepared some gifts for him.
【简答题】简述软件测试的原则和意义。
【单选题】I don't know about him, ______comment on him behind his back.
A.
let alone
B.
let go
C.
leave alone
D.
take leave
【简答题】请简述软件测试的原则。