救援装置之一的紧急手动操作装置（俗称盘车装置）放在（）。
A、轿顶
B、井道
c、底坑
D、机房
参考答案：D
I feel it is your husband who _____ for the spoiled child. [ ]
A. is to blame
B. is going to blame
C. is to be blamed
D. should blame
下列过程或现象与盐类水解无关的是[ ]
A．纯碱溶液去油污
B．铁在潮湿的环境下生锈
C．加热氯化铁溶液颜色变深
D．浓硫化钠溶液有臭味
