Typical marine propulsion plants include() directly coupled to the vessel’s single large-diameter, fixed-pitch propeller.
A. a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine
B. a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine
C. two medium-speed, turbocharged, four-stroke diesel engines
D. a variable-speed AC generator
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所有政党要想获得执政地位必须具备的两个条件是自身的力量、群众的态度。
A. 正确
B. 错误
当A用户登记了呼叫等待业务后,A和B通话中,此时C呼叫A,C会听到振铃,并且A提示有电话接入。
A. 正确
B. 错误