1. [单选题]所谓的“保速保向”意指：I、保持初始时“航向航速”；II、并不一定非得保持同一罗经航向或同一主机转速；III、保持原来的相对他船的速度
A. I
B. II
C. I、II
D. I、II、III
2. [单选题]To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the_______ .
A. suction service valve as a vapor
B. suction service valve as a liquid
C. discharge service valve as a vapor
D. charging valve as a liquid
3. [单选题]油轮上要求配备的救生艇应是：
A. 开敞式
B. 半封闭式
C. 封闭式
4. [单选题]You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using ______.
A. Both engines ahead and helm
B. One engine only
C. Port engine ahead and the starboard engine astern
D. Both engines astern and use helm
5. [单选题]应急舱底泵具有单独的( )。
A. 消火栓
B. 国际通岸接头
C. 海底门
D. 消防水管系
6. [单选题]按MARPOL附则II的规定，清洗装过X类货物的货舱的污水，必须卸至()。
A. 岸上接收装置
B. 国际法兰
C. SLOP舱
7. [单选题]Li Ming and I ________ seamen.
A. am
B. is
C. are
D. shall be
8. [单选题]根据我国《海船船员发证规则》规定，申请轮机长(chief engineer)适任证书考试者，应持有相应航区、等级的大管轮适任证书，并担任其职务满______个月。
A. 12
B. 15
C. 18
D. 24
9. [单选题]30kgf/c㎡=( )MPa。
A. 29.4
B. 2.94
C. 294
D. 2940
10. [单选题]分泌胆汁的器官是______。
A. 胆囊
B. 肝
C. 胰腺
D. 脾脏
