【名词&注释】
能见度(visibility)、不存在(there is no)、劳动者(laborer)、移动性(mobility)、充分发挥(give full play to)、合法权利(legal rights)、落水者(fall in water person)、机动船(motor vessel)、适用于(suitable for)、积极性和创造性(enthusiasm and creativity)
[单选题]船员劳动合同制的基本目的是______。Ⅰ、增强企业活力；Ⅱ、充分发挥劳动者的积极性和创造性(enthusiasm and creativity)；Ⅲ、保障劳动者的合法权利。
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
查看答案&解析
举一反三：
[单选题]可控相复励调压装置是一种( )调节系统，所以调压精度( )，动态特性( )。
A. 开环较高差
B. 闭环高稍差
C. 开环加闭环高好
D. 开环加闭环一般好
[单选题]触诊的目的是了解腹部是否有：
A. 肠鸣音
B. 紧张
C. 移动性浊音
[单选题]直航船的行动条款适用于(suitable for)：
A. 互见中的机动船(motor vessel)
B. 任何能见度情况下的机动船(motor vessel)
C. 互见中的任何直航船
D. 除了不存在碰撞危险以外，两船中应被让路的船舶
[单选题]在晴天黑夜，当船舶驶离强光灯灯塔时，测者看见灯塔灯光中心刚刚隐没于水天线的瞬间称为：()
A. 初显
B. 初隐
C. 初见
D. 以上都错
[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]落水者(fall in water person)体温下降的速度取决于：
A. 水温
B. 水深
C. 水速
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