高温高湿作业,车间的相对湿度可达( )9/6以上。
A.65
B.70
C.80
D.90
参考答案:D
由于矿石初选工况较为恶劣,因此在这一工段,渣浆泵的使用寿命普遍()。
A
The man ______ after he left Microsoft.
A.went to look for another job
B.asked for food from door to door
C.thought of an idea to make money
D.bought a computer and got an e-mail