问题
单项选择题
某一平面应力状态，已知σx=σ，σy=σ，τxy=0，则与xy面垂直的任意斜截面上的正应力和剪应力为（）。
A.A
B.B
C.C
D.D
答案
参考答案：A
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某一平面应力状态，已知σx=σ，σy=σ，τxy=0，则与xy面垂直的任意斜截面上的正应力和剪应力为（）。
A.A
B.B
C.C
D.D
参考答案：A
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| 5. Does Bill like action movies? _____________________________________________ 6. Does Tom like cartoons? _____________________________________________ 7. Does Dave like action movies? _____________________________________________ 8. What kind of movies does Jane like? _____________________________________________ 9. Does Jane like the same kind of movies as her brother Bill? _____________________________________________ 10. Do Tom and Jane both like cartoons? _____________________________________________ |