问题：
[单选] Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of（）.
fuel/water separators。day tanks。injector test stand。fuel filter。
问题：
[单选] Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.
may jam against the stops。will not automatically position the boat at the embarkation station。screw may come out of the sheath。will chafe against the falls and may cause their failure。
问题：
[单选] Most medium and slow speed diesels are started by what medium?（）
Electric starting motors。Hydraulics。Compressed air。Ether。
问题：
[单选] 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（）.
indicates the engine's particulars。tells the engine's function。shows the engine's type。refers to the engine's informatio。
问题：
[单选] On a ship，the possibility of a blowout makes which type of diesel engine shutdown desirable?（）
Overspeed trip。Air inlet shut-off valve。Water injector。Fuel cutoff valve。
问题：
[单选] On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.
one engine ahead and one engine astern，with full rudder。one engine ahead and one engine astern，with rudders amidships。both engines ahead，with full rudder。both engines astern，with full rudder。
问题：
[单选] One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.
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。
问题：
[单选] Overspeed of the diesel engine driving an electric generator could cause（）.
low voltage trip。reverse power trip。damage to windings。excessive exhaust temperature。
问题：
[单选] Please supply my vessel（）120 tons of diesel oil.
for。with。to。o。
问题：
[单选] Storage batteries on T-Boats must be located（）.
in sight of the main engine(s)。in a tray lined with suitable material that resists damage from the electrolyte。in locked closets with restricted ventilation。near the bilge to lower the center of gravity and improve stability。
