更多"The term restricted visibility，when"的相关试题:
[单项选择]The term restricted visibility，when used in the Rules，refers to（）.
A. Situations when you can see vessels on radar that you cannot see visually
B. Visibility of less than half a mile
C. Any condition where visibility is restricted
D. Visibility where you cannot see shore
[单项选择]
When the ship is in restricted visibility, the officer in charge of the engineering watch shall ensure that （）
Ⅰ.Bridge order relating to changes in speed or direction of operation areimmediately implemented
Ⅱ.auxiliary machinery used for maneuvering is readily available
Ⅲ.permanent air or steam pressure is available for sound signals
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
[单项选择]You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
A. stop your engines
B. sound two prolonged blasts of the whistle
C. sound the danger signal
D. slow to bare steerageway
[单项选择]In restricted visibility a towed vessel must sound a fog signal when it is（）.
A. the last vessel in the tow
B. the last vessel in the tow and it is carrying a crew
C. manned，regardless of its position in the tow
D. None of the above are correct
[单项选择]In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing or risk of collision exists. If so, she shall（）.
A. sound the danger signal
B. when taking action, make only course changes
C. avoid altering course toward a vessel abaft the beam
D. All of the above
[单项选择]In restricted visibility the speed of a vessel without operational radar may be（）enable effective avoiding action to be taken on sighting another ship.
A. too low to
B. too high to
C. too high for
D. too low for
[单项选择]You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
A. stop your engines
B. sound two prolonged blasts of the whistle
C. sound the danger signal
D. slow to bare steerageway
[单项选择]The term used in levying customs duties when such are fixed at rates proportioned to estimated value of goods concerned is （）.
A. ad valorem
B. infinite
C. secure
D. specific
[单项选择]When visibility is restricted（），we can say it is restricted visibility.
A. by long distance
B. by the darkness at night
C. by a vessel in front
D. by fog or falling snow
[单项选择]Ammonia when used as a refrigerant is valuable because of its high efficiency, it is however （）.
A. toxic
B. flammable
C. explosive
D. all of the above
[单项选择]When used in conjunction with a turbocharger, the main function of an after-cooler is to （）
A. increase the density of the cylinder air charge
B. prevent turbocharger overheating
C. liminate the need for a pre-cooler
D. remove moisture from air compressed by the turbocharger
[多项选择]Which commands, when used together, would create an 802.1Q link?（）
A. Switch(vlan)# mode trunk
B. Switch(config)# switchport access mode trunk
C. Switch(config-if)# switchport mode trunk
D. Switch(config-if)# switchport trunk encapsulation dot1q
E. Switch(config)# switchport access mode 1
F. Switch(vlan)# trunk encapsulation dot1q
[单项选择]When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）
A. maintain alignment when the ship’s hull is working in heavy seas
B. ensure engine vibrations correspond to the natural frequency of the hull
C. permit the engine to expand away from the driven equipment as the engine heats up and expands
D. maintain engine thrust bearing clearances
[单项选择]When used to fight fire，carbon dioxide（）.
A. is effective if used promptly on an oil fire
B. has a greater cooling effect than water
C. is lighter than air
D. is harmless to cargo and crew
[单项选择]Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）
A. The follow-up gear
B. The rudder angle indicator
C. The synchronous electric transmitter
D. A rudder angle limit switch
[单项选择]In diesel engineering practice, the term used to express the ignition quality of a particular fuel is（）
A. cetane number
B. octane number
C. ignition index number
D. volatility point
[单项选择]A term used to describe the dip in a towline that acts as a shock absorber is（）.
A. catenary
B. step
C. shock dip
D. bight
[单项选择]Intact buoyancy is a term used to describe（）.
A. the volume of all intact spaces above the waterline
B. an intact space below the surface of a flooded area
C. an intact space which can be flooded without causing a ship to sink
D. the space at which all the vertical upward forces of buoyancy are considered to be concentrated
[单项选择]The term OIL as used in the Oil Pollution Regulations means（）.
A. fuel oil
B. sludge
C. oil refuse
D. All of the above
