【名词&注释】
抗菌素(antibiotic)、基本要求(basic requirements)、雷尼替丁(ranitidine)、热辐射(thermal radiation)、救生艇(boat)、通风口(ventilation opening)、使用说明(operating instruction)、工作情况(working condition)、轮机员(engineer)、先锋霉素(cephalosporin)
[单选题]船舶通风系统的防火基本要求之一是：应能对通风系统进行有效控制，包括( )。
A. 通风机的停止
B. 主要通风口的关闭
C. A+B
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举一反三：
[单选题]我国《海船船员值班规则》规定，值班轮机员(engineer)在( )应对当时所有机器的运转参数和工作情况(working condition)加以验证。
A. 值班开始时
B. 值班结束时
C. 值班当中
D. 交接班后
[单选题]抗菌素是()
A. 吗丁啉
B. 先锋霉素(cephalosporin)
C. 雷尼替丁
[单选题]直接反映柴油机热负荷的是()温度。
A. 缸套水出口
B. 活塞冷却液出口
C. 废气透平出口
D. 各缸排气
[单选题]在热传播过程中，以热射线传播热的现象叫______。
A. 热传导
B. 热对流
C. 热辐射
D. 对流
[单选题]在气候正常的条件下，客船上的救生艇、筏或浮具全部降落水面的时间不超过：
A. 10分钟
B. 20分钟
C. 30分钟
[单选题]第一组： The Wartsila 50DF operates on the lean-bum principle: the mixture of air and gas in the cylinder has more air than is needed for complete combustion. Lean combustion reduces peak temperatures and therefore NOx emissions. Efficiency is increased and higher output is reached while avoiding knocking. Combustion of the lean air-fuel mixture is initiated by injecting a small amount of LFO (pilot fuel) into the cylinder. The pilot fuel is ignited in a conventional diesel process, providing a high-energy ignition source for the main engine. To obtain the best efficiency and lowest emissions, every cylinder is individually controlled to ensure operation at the correct air-fuel ratio and with the correct amount and timing of pilot fuel rejection. Wartsila has developed a special electronic control system to cope with the demanding task of controlling the combustion in each cylinder, and to ensure optimal performance in terms of efficiency and emissions under all conditions by keeping each cylinder within the operating window. Stable and well-controlled combustion also contributes to less mechanical and thermal load on the engine components. Current stringent emission regulations demand the reduction of NOx emissions. In an internal combustion engine this means controlling peak temperature and residence time, which are the main parameters governing NOx formations. In the Wartsila 50DF engine, the air-fuel ratio is very high (typically 2.2). Since the same specific heat quantity released by combustion is used to heat up a larger mass of air, the maximum temperature and consequently NOx formation are lower. The mixture is uniform. throughout the cylinder since the fuel and air are premixed before introduction into the cylinders, which helps to avoid local NOx formation points within the cylinder. Benefiting from this unique feature, NOx emissions from the Wartsila 50DF are extremely and comply with the most stringent existing legislation.What is the combustion feature of the Wartsila 50DF?
A. Lean air in the cylinder
B. Excessive fuel in the cylinder
C. Excessive air in the cylinder
D. Spark ignition
[单选题]关于紧急脱险呼吸装置（EEBD），下述说法错误的是______。
A. 紧急脱险呼吸装置至少应能使用10min
B. 紧急脱险呼吸装置应视情包括一个头罩或者全面罩
C. 未启用的紧急脱险呼吸装置应用手才能携带
D. 必须在紧急脱险呼吸装置上清晰地印有简要的使用说明(operating instruction)货清晰的图示
[单选题]下列说法哪种正确？________。
A. 两船中的一船应给另一船让路时；另一船即为直航船
B. 只有两船相遇致有构成碰撞危险时，当一船为让路船时，另一船才为直航船
C. A和B均正确
D. A和B均不正确
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