对于普通螺栓连接，限制端距e≥2d0的目的是为了避免()
A.螺栓杆受剪破坏
B.螺栓杆受弯破坏
C.板件受挤压破坏
D.板件端部冲剪破坏
参考答案：D
—I’m so sorry for losing your dictionary.
—______[ ]
A. Oh, it doesn’t matter.
B. You’re welcome.
C. That’s OK.
D. Thank you all the same.
Can you give me________ on how to keep healthy ? [ ]
A. a good advice
B. some advices
C. an advice
D. some advice
