海船船员考试
单选题Propeller running at （） are generally efficient.A high speedsB medium speedC low speedsD the same speed with the engine
题目
high speeds
medium speed
low speeds
the same speed with the engine
参考答案和解析
相似问题和答案
第1题：
A thrust bearing is used with a propulsion diesel engine to ____.
A.control axial movement of the crankshaft
B.transmit engine thrust to the propeller shaft
C.absorb vibrations in the propeller shafting
D.prevent propeller thrust from being transmitted to the hull
第2题：
Kort nozzles are installed around the propellers of some vessels to ______.
A.increase the thrust of the propeller
B.protect the propeller from striking sawyers
C.protect the propeller from striking barges towed on the hip
D.protect the propeller from touching bottom in low water
一些船舶装配在螺旋桨周围的导流管会减少螺旋桨的？推力。
第3题：
_____, boys like footballs.
A: Generally speaking
B: General speaking
C: Generally spoken
D: Speaking generally
第4题：
Which of the following procedure should be performed prior to delivery and generally involves running a suite of operations so as to verify that the solution is applicable for production?（）
- A、Security Check
- B、Acceptance Testing
- C、Project Close Out
- D、Systems Integration
正确答案:B
第5题：
螺旋桨有四个桨叶。 （）
- A、The helm has four blades.
- B、The propeller has forty blades.
- C、The windlass has four blades.
- D、The propeller has four blades.
正确答案:D
第6题：
Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed ___.
A.apparent slip
B.true slip
C.pitch
D.propulsive efficiency
第7题：
Ground transport is typically more affordable than air， but more expensive than sea especially in developing countries where inland infrastructure is not efficient.
正确答案:正确
第8题：
A、thruster
B、screw
C、rivet
D、propeller
第9题：
撇缆：HEAVING LINE；推进器：PROPELLER。
正确答案:正确
第10题：
keep the propeller from being fouled
increase propeller speed
help calm the waves in the vicinity of the craft
increase the holding power of the sea anchor