承插连接时打麻深度一般为承口深度的1/2。( )
参考答案:错
(2013·江西两所名校二模)The progress of the work will depend on what the weather conditions are and ________ modern the equipment is.
A.how
B.whether
C.what
D.which
胶件有无骨架,尺寸变化规律()。
A.缩小
B.不变
C.视具体结构而定
D.以上都不是