问题
单项选择题
按照库仑一莫尔强度理论，若岩石强度曲线是一条直线，则岩石破坏时破裂面与最大主应力作用方向的夹角为（）。
A.A
B.B
C.C
D.D
答案
参考答案：C
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按照库仑一莫尔强度理论，若岩石强度曲线是一条直线，则岩石破坏时破裂面与最大主应力作用方向的夹角为（）。
A.A
B.B
C.C
D.D
参考答案：C
| 在下列各句的空白处填上一个词。 1. Lucy bought a_____ at a low price. There is much money in it now. 2. Last year on Teachers' Day I received a gift that a student made by herself. It made me moved. This is a gift that has some _____ behind it. 3. A student in Grade Nine left his _____ in the taxi this morning. He was worried because there are many subject books in it. 4. He is an _____ boy, so he never tells lies. 5. He always disagrees _____ me, I think we are never in agreement. |