更多"Some radio waves（）the surface of th"的相关试题:
[单项选择]The radio waves used for radar are very short，only（）long.
A. a few centimeters
B. a few fathoms
C. a few meters
D. a few feet
[单项选择]A radio link between a transmitting earth station and a receiving earth station through one satellite is named a（）.
A. Radio link
B. Space segment
C. Satellite link
D. upper link
[单项选择]Waves formed by the wind blowing far away are known as（）.
A. sea
B. current
C. tide
D. swell
[单项选择]In the northern hemisphere, the largest waves or swells created by a typhoon or hurricane will be located（）.
A. in the southeast quadrant of the storm
B. directly behind the storm center
C. forward and to the right of its course
D. behind and to the left of its course
[单项选择]MODERATE WAVES，TAKING A MORE PRONOUNCED LONG FORM；MANY WHITE HORSES ARE FORMED.THIS sea condition is likely to be termed（）.
A. moderate breeze
B. fresh breeze
C. strong breeze
D. near gale
[单项选择]In the Northern Hemisphere，the largest waves or swells created by a typhoon or hurricane will be located（）.
A. in the southeast quadrant of the storm
B. directly behind the storm center
C. forward and to the right of its course
D. behind and to the left of its course
[单项选择]HIGH WAVES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITY.This condition is likely to be termed（）.
A. strong breeze
B. near gale
C. gale
D. strong gale
[单项选择]The largest waves (heaviest chop) will usually develop where the wind blows（）.
A. at right angles to the flow of the current
B. against the flow of the current
C. in the same direction as the flow of the current
D. over slack water
[单项选择]The lowest point between two waves is called（）.
A. though
B. tough
C. through
D. trough
[单项选择]In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.
A. rollers
B. breakers
C. white caps
D. surfers
[单项选择]Some TV programs are interesting but some others are（）and full of violence.
A. frightening
B. frightened
C. to be frightening
D. to be frightened
[单项选择]Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
A. depend on
B. depending on
C. dependent on
D. depended on
[单项选择]Which statement about radio navigational warnings is TRUE（）.
A. The topics for warnings included in HYDROLANTS，HYDROPACS，and NAVAREA warnings are the same
B. NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound
C. The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N，and west of 15°W
D. Long range radio navigational warnings are usually broadcast by radiotelephone，radiotelegraph，and radio-teletypewriter
[单项选择]General radio communications in the global system are those between（）concerning the management and operation of the ships and may have impact on their safety.
A. SAR party and the ship in distress
B. SAR authorities and the ship in distress and survival craft
C. A ship station and any coast station
D. Ship stations and shore-based communication network
[单项选择]The Emergency Position Indicating Radio beacon on a cargo vessel must be stowed（）.
A. in an inside passageway
B. in an approved bracket
C. so that it is accessible from the bridge of the vessel
D. so that it will float free if the vessel sinks
[单项选择]Which statement concerning GMDSS Radio Operator requirements is FALSE（）.
A. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea
B. Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well
C. Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications
D. While at sea，adjustments to，and the maintaining of，GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer
[单项选择]In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）
A. fuel valves；exhaust valve
B. exhaust valves；inlet valve
C. fuel valves；inlet valve
D. exhaust valves；fuel valve
