When navigating in thick fog with the radar on，you should（）.

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 . in B . by C . on D . with

A . SW of Cocos Islands B . oceanic dangers or seamounts C . undiscovered dangers D . the continental shelf

A . the best fix is obtained by using a tangent bearing and a range B . and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings C . and using ranges，the most rapidly changing range should be measured last D . and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart

A . navigating with a low diesel engine speed B . navigating with a stable diesel engine speed C . increasing the efficiency of propeller D . increasing fuel injectio

A、the relief of that officer shall be made prior to such action has been completed B、the relief of that officer shall never be made C、the relief of that officer shall be deferred until such action has been completed D、the relief of that officer shall be made by the captain

A . Your speed must be reduced to bare steerage ways B . A look-out is not required if the radar is on C . The radar should always be kept on a short-range scale D . Fog signals are only required when a vessel is detected by radar

A . ECDIS B . RADAR C . GPS D . GMDSS

A . Built-in Packages  B . Menus  C . PL/SQL Libraries  D . Object Libraries  E . Form Module

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 . cleaning fuel oil, lubricating oil and seawater filter B . reducing fuel feeding of the main engine appropriately or reducing the pitch angle of propeller C . using low sea chest D . closing the skylight and the ventilation opening, which doesn’t affect the normal work of equipment

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 . one short blast B . one prolonged blast C . two short blast

A . Deep Flood B . Direction Finder C . Double Freeboard D . Dangerous Fertilizer

A . prevent the diesel engine surging B . prevent governor from being damaged because of swing C . reduce the probability of the crank shaft being torsional vibrated and resonated D . prevent the main engine being overload or overspeed

A . should not be regarded as a vessel constrained by her draught B . should be regarded as a vessel constrained by her draught C . shall be regarded as a vessel restricted in her ability to maneuver D . should be regarded as a non-displacement vessel

A．Because each nation wants to keep its characteristics. B．Because they are designed by different artists from 8 countries. C．Because it will enable the blind to distinguish between them easily. D．Because Denmark and other countries want to have their own coins.

It is not recommended that any person shall be allowed on the bridge or in the pilot house except the pilot and other representative of the Canal，and Master and such officers and other members of the crew of the vessel as may be necessary for its navigation and control，management，operation and safety． Navigational aids are difficult to maintain and are reported to be unreliable in this waters．A considerable amount of shipping uses the canal and，in addition，many local fishing craft with nets may be encountered in the area.Since passage through the canal entails a run of more than 250 miles，long periods of considerable vigilance are necessary in order to maintain safe standards of navigation． 问题：PILOT HOUSE is referred to ______ in this passage． A.the cabin in which the pilot stays B.the space in which the rudder is located C.the bridge of vessels D.the cabin which is prepared for the pilot SHIPPING is referred to ______ in this passage．A.he operations of transportation of goods by sea B.the procedures of marine transportation business C.the management of marine transportation business D.the vessels and ships The author implies that ______ ．A.even by making use of modern instrument it is difficult to maintain safety in this area B.mariners should take it easy when navigating in this area C.modern instrument should be used to control the safety of navigation in this area D.it is dangerous when navigating in this area The person on the bridge or in the pilot house shall be those ______ ．A.who are recommended B.who are familiar with the navigation，management，operation and safety control C.who are directly involved in the navigation，management，operation and safety control D.who have nothing to do with the navigation，management，operation and safety control