对于公称直径大于或等于500mm的V类管道，弯管组装的偏斜角度应不大于（）。A、1°

—You couldn't have chosen any gift better for me.

—________

A．Sorry, but don't blame me.

B．You've had a gift for music, haven't you?

C．Oh, I'd choose a better one for you next time.

D．I'm glad that you like it so much.

生物可以生活在地球的任何地方。[ ]

请你写出在生活、学习中恰好是反比例函数的一个例子______．

使用水准仪时，欲使望远镜在水平方向固定，应调节（）。

A.微动螺旋

B.微倾螺旋

C.制动螺旋

D.上述均可

过励限制器