更多"The term PROLONGED BLAST refers to（"的相关试题:
[单项选择]The term PROLONGED BLAST refers to（）.
A. a blast of from five to seven seconds' duration
B. a blast of from five to six seconds' duration
C. a blast of from four to six seconds' duration
D. a blast of from six to seven seconds' duration
[单项选择]In reduced visibility，you hear two prolonged blasts of a whistle. This signal is sounded by a （）.
A. power-driven vessel dead in the water
B. sailing vessel on the port tack
C. vessel not under command
D. vessel fishing with nets
[单项选择]A fog signal consisting of one prolonged blast followed by four short blasts would indicate thepresence of a（）.
A. vessel being towed
B. fishing vessel engaged in trawling
C. vessel at anchor warning of her location
D. power-driven pilot vessel on station underway
[单项选择]The duration of a prolonged blast of the whistle is（）.
A. 2 to 4 seconds
B. 4 to 6 seconds
C. 6 to 8 seconds
D. 8 to 10 seconds
[单项选择]Which term refers to a transverse curvature of the deck（）.
A. Deadrise
B. Camber
C. Freeboard
D. Flare
[单项选择]In sewage treatment, the term maceration refers to the process of （）
A. breaking up solid matter into fine particles
B. precipitating non-decomposed waste in a collection tank
C. chemically adjusting the sewage ph to 7-0
D. eliminating bacterium coli from the sewage
[单项选择]The term lee side refers to the（）.
A. side of the vessel exposed to the wind
B. Side of the vessel sheltered from the wind
C. Port side
D. Starboard side
[单项选择]The term flood current refers to that time when the water（）.
A. is flowing towards the land
B. is moving towards the ocean
C. level is not changing
D. level is rising because of heavy rains
[单项选择]The term LEE SHORE refers to the（）.
A. shore on the lee side of the vessel
B. shore that is in the lee
C. western shore of the Lesser Antilles
D. shore in a harbor of refuge
[单项选择]The term （） refers to one complete sequence of operations required to produce power in an engine.
A. diesel engine
B. stroke
C. cycle
D. compression ratio
[单项选择]The term BOLLARD PULL refers to a towing vessel’s（）.
A. propulsion horsepower available
B. pulling ability at cruise power
C. towing winch capability
D. pulling ability under static conditions
[单项选择]A signal of one prolonged，one short，one prolonged，and one short blast，in that order is given by a vessel（）.
A. engaged on pilotage duty
B. in distress
C. at anchor
D. being overtaken in a narrow channel
[名词解释] 迟发延续反应（delayed prolonged response）
[单项选择]Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause （）.
A. the formation of sulfuric acid
B. a decrease in lube oil viscosity
C. a decrease in cooling water pH
D. a thermostat failure
[单项选择]You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.
A. Towing
B. Engaged on pilotage duty
C. Aground in a fairway
D. Stopped and making no way through the water
[判断题]The term dialect,as a technical term in linguistics,carries value judgement and not simply refers to a distinct form of language.
[单项选择]A whistle signal of one prolonged，one short，one prolonged and one short blast，is sounded by a vessel（）.
A. at anchor
B. towing a submerged object
C. being overtaken in a narrow channel
D. in distress
[单项选择]Displacement refers to the（）.
A. cubic capacity of a vessel
B. deadweight carring capacity of a vessel
C. gross tonnage of vessel
D. number of long tons of water displaced by a vessel afloat
[单项选择]Bulk cargo refers to（）.
A. cargo which occupies a large volume of space
B. cargo which require refrigeration
C. cargo which is very dense
D. homogeneous cargo not enclosed in a container
