更多"[单选题] The two courses of action if "的相关试题:
[单选题] ______ is a round-shaped underwater part in the front of the ship. The purpose is to create less friction with water so that the ship moves more easily.
A. The bulbous bow
B. The anchor
C. The bow thruster
D. The propeller
[单选题] The two most effective generating forces of surface ocean currents are ______.
A. temperature and salinity differences in the water
B. wind and density differences in the water
C. water depth and underwater topography
D. rotation of the Earth and continental interference
[单选题] The shortest distance between any two points on esrth defines a _____.
A. small circle
B. great circle
C. rhumb line
D Hyperbola (双曲线)
[多选题]Concurring wills attributable to two or more parties may be expressed:
A. in writing.
B. verbally.
C. through conduct.
D. by silence.
[单选题]Air conditioning systems fall into two main classes and central systems.
A.individual unit systems
B.flexible unit systems
C.rotary unit systems
D.reciprocating unit systems
[单选题] The IALA buoyage system is divided into two categories:________.
A.The buoy system and the lighthouse system
B.The central buoy system and the side buoy system
C.The lateral system and the cardinal system
D.The stripe system and the band system
[单选题] The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for____.
A.The sun to be at the opposite side of the moon
B.The moon to be at the opposite side of the earth
C.The moon to be at its apogee
D.The sun and the moon to be on the same side
[单选题]?Two vessels are approaching each other near head on. What action should be taken to avoid collision?
A. The first vessel to sight the other should give way
B. The vessel making the slower speed should give way
C. Both vessels should alter course to starboard
D. Both vessels should alter course to port
[单选题] Nobody fails to find that his two nephews are much _____.
A. alike
B. same
C. exact
D. resembled
[单选题]The two letter code of Alitalia is（ ）
A.AA
B.AC
C.AZ
D.AF
[单选题]When we say the two objects have relative motion,we mean___.
A.the distance between them remains the same
B.the distance between them is changing
C.the positions of either of them to the earth remain the same
D.their positions to the earth remain the same.
[单选题]In two-stroke engine the crankshaft is connected withby means of the connecting rod.
A.the stuffing box
B.the piston
C.the crosshead bearing
D.guide plate
[单选题] Two barges are being pushed ahead by a tugboat．Which statement is TRUE concerning lights on the barges ________．
A.Each vessel should show sidelights
B.Each vessel should show at least one white light
C.The barges should be lighted as separate units
D.The barges should be lighted as one vessel
[单选题] Which one of two crossing power-driven vessels has the right of way in a fog ________.
A. Both vessels
B. Neither vessel
C. The vessel on portside
D. The vessel on starboard side
