1. [单选题]申请轮机长考试者，应持有相应航区、等级的大管轮适任证书，并担任其职务满___月。
A. 12
B. 15
C. 18
D. 24
2. [单选题]STCW 78/95 Convention shall apply to seafarers _____ on board seagoing ships entitled to fly the flag of a Party.
A. served
B. serving
C. surveyed
D. surveying
