【单选题】下列不属于异步电机的漏磁通是______。
【简答题】They_____ _______ cocoons. Now they ______ ___________.
【多选题】The cocoons will be boiled in hot water in order to __________.
C.
wash the cocoons completely
D.
melt the glue among the silks
【单选题】For what purpose should the cocoons be first steamed?
A.
To kill the pupae inside.
B.
To dissolve the sticky coating that binds the silk.
C.
To make sure the strands will not be twisted.
【单选题】关于电离室控时自动曝光控制叙述错误 的是
【多选题】为了使点焊部位有足够的强度,在进行焊接前对点焊机先进行( )调 整。
【单选题】关于电离室控时自动曝光控制叙述错误的是 ( )
【简答题】They are brown cocoons. ( 改成一般过去时 ) They ________ brown cocoons.
【单选题】关于电离室控时自动曝光控制叙述错误的是()