A navigator fixing a vessel’s position by radar （）.

A . toward the inside of the bend B . toward the outside of the bend C . toward the center of the river just before the bend，then change course for the river's center after the bend D . in the river's center

A . accessible B . restricted C . deterred D . far away

A . where oil or chemical drums are stored B . in all battery storage locations C . in paint lockers D . in all of the above locatio

A . painted red and labeled B . concealed from the crew C . protected by plexiglass D . padlocked

A . a warp end B . a mooring winch C . a worm gear D . a barrel

A . a mother ship B . a lifeboat C . a life craft D . all of A,B,C

A . Anchoring in the presence of ice is not recommended except in an emergency B . Towing a vessel through an ice field is not recommended except in an emergency C . The "Free and Proceed" system of escorting a beset vessel cuts down on the number of freeing operations D . When anchoring in ice，it is advisable to increase the scope of the chain over what is normally used for non-icing conditio

A . fine B . imprisonment C . suspension or revocation of tankerman's document D . All of the above

A . Nearest Oceanographic office B . The Marine Safety Center at Coast Guard Headquarters C . National Ocean Service D . Nearest Officer in Charge，Marine Inspectio

A、a straight line drawn on the chart approximates a great circle B、the chart should not be used outside of the standard parallels C、the course angle is measured at the mid-longitude of the track line D、Distance cannot be measured directly from the chart

A . should never use radar bearings B . should only use radar bearings when the range exceeds the distance to the horizon C . can use radar information from one object to fix the position D . must use information from targets forward of the beam

A . Slightly higher fuel consumption B . Lack of directional control when backing C . Inefficient at high shaft RPM D . Some unusual handling characteristic

A . Can always rely on a buoy to be on station B . Can always rely on a buoy to show proper light characteristics C . Should assume a wreck buoy is directly over the wreck D . Should never rely on a floating aid to maintain its exact positio

A . the weight of its tow，its being anchored，or grounded B . the weight of its towing hawser on the bottom C . an adverse current D . lack of power or an engine breakdow

A . Hifix B . Hyperfix C . Trisponder D . WGS84

A . Entrance buoy B . New buoy C . Port buoy D . Cardinal buoy

A . chute B . stabilized channel C . slough D . navigable pa

A . center bearings B . tangent bearings C . ranges D . objects that are close aboard

A．appreciation B．devaluation C．a foreign trade surplus D．interest rate increase

下列算式正确的是()。 A．Int(2,8)=3 B．Fix(-2,8)=-3 C．Fix(-2,8)=-2 D．Int(-2,8)=-2

A．at B．in C．on D．with