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单选题
Emergency full astern!（）
A
应急后退
B
应急前进
C
应急全速后退
D
后退三
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紧急后退三。（）A、Full astern！B、Double full astern！C、Emergency full astern！D、Emergency three astern！
考题
单选题紧急后退三。（）A
Full astern！B
Double full astern！C
Emergency full astern！D
Emergency three astern！
考题
单选题A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）.A
When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may resultB
When going directly from full ahead to full astern，there is complete steering controlC
When the vessel has headway and the propeller is in neutral，there is no effect on rudder controlD
When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM
考题
单选题“Full speed ahead” and “Full speed astern” are（）given by the officers or the pilots.A
sailing ordersB
speed ordersC
wheel ordersD
telegraph orders
考题
单选题When the vessel on the full speed ahead, if full astern immediately （） the main engine start astern and fuel injection.A
after the thrust power is zeroB
after the torsion is zeroC
surpass the critical point on the water turbo phaseD
after the speed is zero
考题
单选题It takes about 12 seconds to reverse（）full speed ahead（）speed astern.A
at, toB
to, fromC
from, toD
at ,from
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单选题The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.A
the distance of visibilityB
1/2 the distance of visibilityC
a distance appropriate to the existing circumstances and conditionsD
the distance that it would require for the propeller to go from full ahead to full astern
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单选题My ship’s engine responds well to telegraph orders and takes about 80 seconds to reverse from full speed ahead to full speed astern. This sentence（）.A
indicates the engine's particularsB
tells the engine's functionC
shows the engine's typeD
refers to the engine's information
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one engine ahead and one engine astern，with full rudderB
one engine ahead and one engine astern，with rudders amidshipsC
both engines ahead，with full rudderD
both engines astern，with full rudder
考题
单选题A light signal consisting of three flashes means （）.A
I am in doubt as to your actionsB
My engines are full speed asternC
I desire to overtake youD
I am operating astern propulsion
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