A.Radial
B.Sheath-screw
C.Quadrantal
D.Gravity
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A.Centrifugal
B.Gear
C.Piston
D.Vane
A.A flashing light combined with a fixed light of greater brightness
B.Light flashes combined in groups，with a different number of flashes in each group
C.A light showing groups of two or more flashes at regular intervals
D.A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
A.auxiliary guys
B.extra fair leads
C.steel bands
D.stops
A.be open to view so，if a foreign object gets in the gearing，the operator can immediately stop the machinery
B.have a guard over the gearing
C.be painted a contrasting color from the base color in order to call attention to the gearing
D.not be operated if there is any crew within 10 feet of the machinery
A.conspicuously marked
B.stowed anywhere
C.left on deck
D.secured or stowed out of the way
最新試題
The vessel or other goods upon which the Works have been carried out must be（）from the Repairer’s worksite within 3 days after the invoice date or in accordance with other written notification by the Repairer to the Customer.
The margin plate is the（）.
You have been towing astern and have just let go the tow.Your deckhands are pulling in and faking the towline by hand on the stern.The most dangerous action to take is to（）.
The purpose of the tripping line on a sea anchor is to（）.
The usual method of arranging a line on deck so that it will run out easily without kinking or fouling is（）.
The stevedores have already stowed the porcelain ware（）up to the deckhead.
The minimum length of a boat painter for a lifeboat in ocean service is（）.
You are handling a mooring line and are instructed to Check the line.What should you do（）.
Which tackle arrangement has the LEAST mechanical advantage（）.
What is meant by the term TOPPING THE BOOM?（）