Not until liberation _ he __free.
A.was, set
B.that, was set
C.did, set
D.did, was set
答案:D
操课(工作)时间,一般不准因私事会客,特殊情况需会客时应经()批准。
A、间接首长
B、直接首长
C、指导员
D、教导员
试述压缩机4L-20/5型的开停车操作?