更多"The main advantage and chief charac"的相关试题:
[单项选择]The main advantage of improved Simplex tailshaft seal are（）
A. the good sealing performance and the simple structure
B. the good sealing performance and the short life expectancy
C. the good sealing performance but the short life expectancy
D. the good sealing performance and the lower cost
[单项选择]Which characteristic is an advantage of Halon as a fire extinguishing medium?（）
A. Electrically non-conductive
B. Relatively inexpensive
C. Effective against chemicals containing an oxidizer
D. All of the above
[单项选择]The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）
A. method of supplying air
B. cooling system
C. method of igniting fuel
D. valve operating mechanism
[单项选择]When anchoring in open anchorage, chief engineer should consult with captain （）
A. if the ship must be stand by
B. if M-E should be stopped
C. if keep-watching as in voyage
D. if the ship must anchor two anchors
[单项选择]The main advantage of a Chinese stopper over the one line stopper is that it（）.
A. will not jam on the mooring line
B. is stronger
C. is easier to use when under heavy tension
D. is safer to use when under heavy tension
[单项选择]Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
A. They are less expensive
B. They are smaller for equivalent pumping ability
C. They pump more cargo in less time
D. All of the above
[单项选择]What is/are the advantage（s）of cranes over conventional cargo booms（）.
A. Cranes are able to pick up and drop loads over a greater spotting area
B. Increased safety because the deck is clear of running and standing rigging
C. Simplicity of operation of the crane by its operator
D. All of the above
[单项选择]It is the chief mate’s job（）the tank cleaning operation．
A. to plan
B. planning
C. for planning
D. in planning
[单项选择]Chief foreman, you are requested to instruct all stevedores boarding the ship that no smoking is（）in the holds during loading.
A. allowed
B. forbidden
C. approved
D. disliked
[单项选择]What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?（）
A. more economic
B. larger capacity on oil treatment
C. less costive
D. more capable of separating emulsified oil
[单项选择]What’s the advantage when using the satellites?（）
A. The message can be directed to the desired location
B. The message can follow the earth‟s curvature
C. The quality of message can not be affected by climatic
D. the range of the message extend and the quality of reception is improved
[单项选择]The Chief Checker reminded the Chief Officer（）the dried turnips on top of the turpentine.
A. to put not
B. not to put
C. of putting
D. of not putting
[单项选择]In modern installations, the main engine and the standby auxiliary engines（）
A. can be started at low temperature and are free from preheating
B. usually are preheated by steam before being started
C. are kept at a constant temperature and free from preheating
D. are kept at a low temperature to save energy
[单项选择]The main objective of the SOLAS Convention is to specify （） for the construction, equipment and operation of ships, compatible their safety.
A. at most references
B. at least references
C. maximum standards
D. minimum standards
[单项选择]I hereby request permission（）the ship’s main engine for routine maintenance.
A. immobilize
B. to immobilize
C. immobilization
D. immobilizing
[单项选择]The main steering gear must be able to steer the ship at maximum ahead service speed and be capable at this speed, and at the ships deepest service draught, of putting the rudder from 35 degrees on one side to 30 degrees on the other side within no （）.
A. more than 28 seconds
B. more than 60 seconds
C. less than 28 seconds
D. less than 60 seconds
[单项选择]One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
A. high TBN value
B. low oil floc point
C. low oil demulsibility
D. low oil neutralization number
