安全仪表系统是()。
A、SIS
B、APC
C、DCS
D、ESD
参考答案:A
As a manager, I know my emotions will affect people around me, so I’m going to make a _______ effort to be more cheerful.
A.precious
B.curious
C.mysterious
D.conscious
在航行通告中,“NOTAMR”表示:().
A.二级航行通告
B.定期航行通告
C.代替航行通告
D.取消航行通告