apparent slip
tree slip
pitch
propulsive efficiency
第1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2题：
In reducing engine speed to an efficient propeller speed by the use of reduction gears, _______.
A.speed and torque are both reduced
B.speed is reduced and torque remains unchanged
C.speed is reduced and torque is increased
D.speed is sometimes unchanged while torque is increased
第3题：
In moving forward, a ship imparts forward motion to the water at the stems, this is known as _____.
A.the speed of the vessel
B.the speed of the propeller
C.the wake
D.the wake fraction
第4题：
the extra weight required for the diesel reduction gearing
a minimum speed for the engines that limits the minimum speed of the vessel
the higher fuel consumption per SHP
the low efficiency of the system when a controllable pitch propeller is used
第5题：
EIGRP has been configured to operate over Frame Relay multipoint connections. What should the bandwidth command be set to?（）
第6题：
Compared to a constant pitch propeller, a controllable pitch propeller
A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed
第7题：
An over-speed safety device is usually fitted to a generator engine for ___ in the event of over-speed.
A.stabilizing the ship speed
B.increasing the fuel pump setting
C.braking the crankshaft
D.cutting power off the engine
第8题：
A.The automatic control system
B.The speed regularly system
C.The transmission system
D.The compression air system
第9题：
increase ship's speed
slow down ship's speed
make up ship's speed
fix up shp's speed
第10题：
how much
how many
about
what