根据商务部发布的《国际货运代理企业备案(暂行)办法》,国际货运代理企业的备案分为()
A.企业设立备案
B.企业变更备案
C.业务经营备案
D.经营权许可备案
参考答案:A, B, C
30. Had it not been for the fact that I _____ absent, I would have asked you to do this right now.
A.had been
B.were
C.should be
D.Was
SIEMENS公司生产802S系统比840D系统先进。