更多"Before doing any work on a hydrauli"的相关试题:
[单项选择]She had clearly no（）of doing any work, although she was very well paid.
A. tendency
B. ambition
C. intention
D. willingness
[单项选择]Before hydraulic starting of an engine on a covered lifeboat，what need NOT be checked?（）
A. Fuel supply line valve
B. Pressure registered on the accumulator gauge
C. Cold-spark voltage readings test lamp
D. Engine stop control
[单项选择]Hydraulic cranes must be properly warmed-up before being operated because （）.
A. warm-up allows the hydraulic system to become charged with oil
B. warm-up allows the relief valves to be properly tested
C. hydraulic strainers operate only during the warm-up period
D. hydraulic fluid must be at the proper viscosity
[单项选择]Which statement is true concerning a vessel equipped with operational radar?（）.
A. The Master of the vessel must be on the bridge when the radar is in use
B. The radar equipment is only required to be used in restricted visibility
C. The use of a radar excuses a vessel from the need of a look-out
D. This equipment must be used to obtain early warning of risk of collision
[单项选择]Which statement is TRUE concerning a vessel equipped with operational radar?（）.
A. She must use this equipment to obtain early warning of risk of collision
B. The use of a radar excuses a vessel from the need of a look-out
C. The radar equipment is only required to be used in restricted visibility
D. The safe speed of such a vessel will likely be greater than that of vessels without radar
[单项选择]A separate piston cooling system is used （） any contamination from piston cooling glands to the piston cooling system only.
A. to help
B. to limit
C. to protect
D. to remove
[单项选择]In the operation of a flash type evaporator equipped with air ejectors,the air and non- condensable gases are evacuated directly from the （）.
A. first stage flash chamber
B. second stage flash chamber
C. first stage after condenser
D. second stage distilling condenser
[单项选择]The cooling system（） needs least maintenance work for in this kind of system（）
A. open；the minimum components
B. open；the high cooling efficiency
C. central；there are more coolers and a extra set of pumps
D. central；there is only one component contacts seawater
[单项选择]Prior to any overhaul work on electric equipment, it is important to ensure the circuits are （）.
A. live
B. dead
C. excited
D. on line
[单项选择]Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out （）
A. De-energize the applicable switchboard bus
B. Bypass the interlocks
C. Secure and tag the supply circuit breaker in the open position
D. Station a man at the circuit supply switch
[单项选择]On a rigid liferaft (SOLAS B pack) which is equipped with all of the required equipment you may NOT find a（）.
A. bailer
B. sponge
C. whistle
D. fishing kit
[单项选择]Faulty operation of any system is indicated by very definite （）.
A. symptoms
B. samples
C. traces
D. tracks
[单项选择]There is （） in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition.
A. a setting tank
B. a service tank
C. a head tank
D. an expansion joint
[单项选择]Before any loading takes place any signs of the previous cargo should do（）.
A. kept
B. removed
C. replaced
D. recycled
[单项选择]A mooring system that results in a spread system without anchor buoys is called a（）.
A. permanent chasing system
B. wire rope mooring system
C. shepherd's crook mooring system
D. spring buoy mooring system
[名词解释]System management mode
[单项选择]A segregated ballast system is a system where （）.
A. all ballast is processed through the oily water separator
B. ballast is taken on and discharged through a separate main deck riser
C. ballast and cargo tanks are separated by cofferdams
D. all ballast lines, tanks, and pumps are independent of those used for oil
