拟实施PMS的船舶,船舶所有人可向CCS总部提出书面申请。船舶所有人应首先建立一个主管PMS的机构和专门人员,并提供相应资料一式()份。
A.2
B.3
C.4
D.5
参考答案:B
----What were you doing _________ 8 last night?
----- While I was wandering in the street, I noticed a wallet __________ on the ground.
A.at; laying
B.on; lie
C.on; laid
D.at; lying
正常静脉肾盂造影、肾盂肾盏显影最浓的时间是静脉内注射对比剂后()
A.1~2分钟
B.3~5分钟
C.6~10分钟
D.15~30分钟
E.60~120分钟