为保证空压机正常运转和保证空气质量进气管道均经过()。
A.减压阀
B.空气滤清器
C.分离器
D.除油
参考答案:B
With the nuclear crisis worsening in Iran, the world's attention is fixed again on is called the Middle East. [ ]
A. which
B. that
C. what
D. it
共享硬盘服务器将共享硬盘空间划分为多个虚拟盘体,虚拟盘体分专用盘体、( )、( )3部分。