If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.

[单选题]In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.A . insure that the hawser leads directly aft as it passes over the stern of the towing vesselB . increase the stability of the towing vessel by raising the hawser off th

[单选题]A towing vessel’s capability is BEST measured by horsepower，bollard pull，maneuverability and（）.A . displacementB . stabilityC . towrope pullD . propeller desig

[单选题]When a vessel’s LCG is aft of her LCB，the vessel will（）.A . trim by the sternB . trim by the headC . be on an even keelD . be tender

[名词解释] Sever对象

[单选题]On a passenger vessel，the vessel’s name must appear on（）.A . ring life buoyB . lifeboatsC . lifeboat oarsD . All of the above

[单选题]Auxiliary boilers are divided into several classifications, one of which is （）.A . water-tube supercritical circulationB . water-tube forced circulationC . fire-tube controlled circulationD . fire-tube express circulatio

[单选题]F．rom their _____on the top of the TV Tower, visitors can have a better view of the city.A．stageB．position C．conditionD．situation

[名词解释] 简述SEVER对象的功能

[单选题]As seen from the tow，what should connect the leading ends of both towing bridle legs to the main towing hawser?（）A . A cable clampB . A fishplate，flounder，or towing plateC . A pad eyeD . The towing bitt

[单选题]There is ________ Ocean-going Vessel in the harbor.A．aB．theC．anD．about