DWDM系统维护中传输机房日常维护项目是()
A.光通道信噪比测试
B.无人机房设备运行状况巡视
C.设备运行状况巡视
D.版本升级
参考答案:C
— Do you know anything about that man?
— No. I know nothing about him _______ I read in the newspaper yesterday.[ ]
A. besides
B. except what
C. except for
D. except when
Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern,To adjust the trim, you may().
A.add ballast forward
B.load more cargo forward
C.shift bunkers forward
D.All of the above