电除尘器有哪些作用?
参考答案:
⑴减少烟气含尘量和环境污染。
⑵减少引风机叶轮的磨损。
67,75,59,91,27,( )
A.155
B.147
C.136
D.128
You have no idea what I’ve had to ______ during the last few months.
A.come through
B.go through
C.cut through
D.get through