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