当某一工作区需要高于一般照明照度时，可采用( )。
A．值班照明
B．分区一般照明
C．局部照明
D．定向照明
参考答案：B
The weather turned out to be fine yesterday. I ______ my umbrella with me.[ ]
A. would have carried
B. could have carried
C. needn't have carried
D. mustn't have carried
汽轮机进行中当工况变化时，推力盘有时靠工作瓦块，有时靠非工作瓦块。
