1. [单选题]With reference to a two-ram actuating mechanism, which one of the following statement is FALSE?
A. The rams work inside cylinders.
B. The cylinders have glands sealing their open ends.
C. The rams are connected to a cross-head
D. The cross-head is mounted on the rudder stock
2. [单选题]正规瞭望的最基本手段是：
A. 视觉
B. 听觉
C. 雷达
D. AIS
3. [单选题]In the event of a small bunker oil spill on deck occurring while bunkering, you should ____.
A. wash down the area immediately with a fire hose
B. wash down the area with kerosene
C. cover the area with absorbent material
D. cover the area with foam
4. [单选题]鲨鱼能很远距离感觉到人的汗血腥气味是何种器官：
A. 嗅觉
B. 视觉
C. 听觉
D. 都是
5. [单选题]扁桃体能产生淋巴细胞，具有：
A. 助消化功能
B. 防御功能
C. 解毒功能
D. 呼吸功能
6. [单选题]Which of the following statements is correct regarding an oil with a high viscosity index?
A. A large change of viscosity occurs with a minor change in temperature
B. No change in viscosity occurs with any change in temperature
C. Very little change in viscosity occurs with a significant change in temperature
D. The viscosity of the oil increases with an increase in temperature
7. [单选题]"我船企图从你船右舷追越"的信号为：()
A. 二长一短声
B. 二长二短声
C. 一短二长声
D. 二短二长声
8. [单选题]落水者(fall in water person)被迅速冻死是由于______因素决定的。①人体体表隔热保温能力差②水的导热速度很快
A. ①
B. ②
C. ①②
9. [单选题]海员证有效期限(valid period)最长不超过＿年；有效期满不得不延期时，延期最长不得超过＿个月；有效期不足＿年的海员证，不得延期。
A. 4，5，3
B. 5，5，3
C. 4，3，2
D. 5，3，2
10. [单选题]让路船应遵守________。
A. 仅遵守16条让路船的行动条款
B. 除遵守16条外，还应遵守其他有关各条
C. A和B均正确
D. A和B均不正确
