一般临时设施区域,每100m2配备( )个10L灭火器。
A.2
B.3
C.4
D.5
参考答案:A
I can't buy the dress because I have just _____ money.[ ]
A: bit
B: a bit of
C: few
D: a few
试述钢球磨煤机本体部分的检修程序?