Chafing gear is used to（）.

A . they must be located at the after end of the engine B . they can only be used with one engine at a time C . they eliminate the need for controllable pitch propellers D . they are connected to the engine with a flexible coupling

A . Six by seven galvanized wire rope B . Six by twenty-four improved plow steel wire rope C . Six by thirty-seven preformed fiber-core wire rope D . Six by nineteen regular-lay filler wire rope

A . for portable fenders B . for ground tackle C . on the inside of the hawsepipe D . on mooring line

A . at all wearing points of mooring lines B . at the bitter ends of all standing rigging C . around running rigging D . on wire rope only

A . water B . babbitt C . iron or steel D . acid

A . a distress message B . an urgency message C . a safety message D . a message of SMCP

A . Only one pump should be used at any time B . The ship speed should be reduced to 70% of the normal C . Watch keeping of the steering gear should be increased D . Limitations of the steering gear should be logged but the bridge need not be informed

A . when B . where C . which D . that

A . Diesel engine propulsion B . Diesel electric propulsion C . Steam engine propulsion D . Gas turbine propulsio

A . transmit the rudder angle to the bridge indicator B . prevent the control linkage from striking the stops when hard over C . automatically purge all entrained air from the system D . send hydraulic signals to the receiving unit

A . the hunting gear B . the rudder stock C . the rudder controller D . the feedback unit

A . control the fluid flow through it B . prevent the pressure before it over the specified valve C . make the pressure after it steady D . control the direction of oil flow

A . hydraulic steering B . follow-up steering C . remote control steering D . air controlled steering

A . Cranes are more difficult to secure for sea B . The spotting area of the conventional gear is larger C . A crane operator requires more training than the winch operator of a yard and stay rig D . The yard and stay rig is more flexible in its ability to handle a wider variety of cargoe

A . must churn the oil in the sump B . is connected to the propeller shaft C . is driven at the highest RPM D . compensates for alignment variations between the engine and pinion gear

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 clearance

A . transmitter B . tele-motor C . hydraulic ram D . hydraulic cylinder

A . two tucks with whole strands and one tuck with one-half strand B . three tucks with whole strands and two tucks with 1/2 the wire cut from the tucking strand C . three tucks with whole strands D . two tucks with whole strands and three tucks with half strand

A.Nouns show action B.Nouns are informal. C.Verbs show action D.Verbs are informal.

A．praise a girl&39; s beauty B．admire a girl&39; s youth C．show a girl&39; s shy D．curse a girl