等粗直径钢筋镦粗直螺纹连接的强度与母材的强度相比，()。A.前者_爱下问搜题

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问题单项选择题

等粗直径钢筋镦粗直螺纹连接的强度与母材的强度相比，()。

A.前者高

B.前者低

C.两者相等

D.没有规律

答案

参考答案：A

选择题

John received an invitation to dinner, and with his work ________, he gladly accepted it.[ ]

A. finished

B. finishing

C. having finished

D. was finished

单项选择题

（）在同一罐内，人员与物料混合提升。

A、可以

B、禁止

C、无妨碍