更多"A single-screw vessel going ahead t"的相关试题:
[单项选择]Your vessel is going from a warm climate to a cold climate with a hygroscopic cargo. Which statement is true?（）.
A. You must ventilate constantly and vigorously to combat ship sweat A.Press up the slack No.1 starboard double bottom tank
B. You should ventilate; there is little danger of ship sweat, but a possibility of cargo sweat
C. There is danger of heavy cargo sweat if you ventilate
D. There is little danger of any sweat problem
[单项选择]When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line or both side lights，（）shall be deemed to exist.
A. head-on situation
B. end-situation
C. crossing situation
D. close-quaters situation
[单项选择]Gasoline vapor tends to collect（）.
A. above the floor plates of the bilges
B. above the carburetor level
C. at the lowest point of the bilge areas
D. at no particular level
[单项选择]Air that may enter a refrigeration plant tends to collect in the （）.
A. upper part of the receiver
B. upper part of the condenser
C. down stream end of the cooling coil
D. outlet end of the condenser
[单项选择]A substance found in residual fuels which tends to cause exhaust valve corrosion and grooving, is（）
A. carbon
B. vanadium
C. calcium
D. hydrogen
[单项选择]Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?（）
A. Baffle plates that have been bent during prior removal
B. Leaks in the cooler tube nest
C. Operating the engine while maintaining a high sea water outlet temperature
D. A punctured sea water strainer supplying cooling water to the heat exchanger
[单项选择]Sidewise force of the propeller tends to throw a vessel’s stern to the right or left，depending on rotation. This force is caused by（）.
A. back current from the rudder
B. greater pressure on the right or left side of the propeller，depending on rotation
C. lower pressure on the right or left side of the propeller，depending on rotation
D. torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
[单项选择]The force exerted by a propeller which tends to throw the stern right or left is called（）.
A. slip
B. sidewise force
C. rotational force
D. thrust
[单项选择]The internal force of a material, which tends to resist deformation when subjected to external forces, is known as （）.
A. stress
B. strain
C. shear strength
D. ultimate tensile strength
[简答题]冶炼42CrMo钢，炉中分析Mo＝0.16%，钢水量20t，求需加入多少Mo-Fe，使[Mo]＝0.20%？（Mo-Fe含Mo为60%）
[单项选择]Fishing gear with buoys ahead（）you.
A. of
B. on
C. for
D. at
[单项选择]The vessel ahead（）you is stopped.
A. before
B. from
C. of
D. away
[单项选择]When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
A. prevent the towboat from sliding when the rudder is moved
B. prevent the barges from spreading out when backing down
C. hold the towboat securely to the barges
D. prevent the sidewise movement of the face barges
[单项选择]A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of（）.
A. a vessel towing by pushing ahead
B. a power-driven vessel，not towing
C. a barge being pushed ahead
D. either answer A or answer B
[单项选择]A towboat is pushing barges ahead at a dangerously fast speed when（）.
A. the towboat vibrates when backing down
B. the roostertail exceeds the height of the main deck
C. a strain is placed on the face wires
D. water comes over the foredeck of the lead barges
[单项选择]To increase the distance to the vessel ahead by reducing one’s own speed means（）.
A. fall back
B. keep low speed
C. running after
D. drop back
[单项选择]There is a vessel ahead（）your movement.
A. backup
B. blocking
C. choking
D. obstructing
[单项选择]At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.
A. in distress
B. approaching a bend in the channel
C. operating astern propulsion
D. intending to overtake another vessel
