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【单选题】
一台他励直流发电机由额定运行状态转速下降到原来的50%,而励磁电流、电枢电流都不变,则 ( ) 。A.
端电压下降到原来的50%
B.
Ea下降到原来的50%
C.
T下降到原来的50%
D.
Ea和T都下降到原来的50%
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【单选题】Tested & inspected the steering systems & other navigational equipments & found them in good condition. L ’ dg & uni ’ dg finished. This remark is likely made by the OOW ________.
A.
at the beginning of his watch
B.
during his watch
C.
at the end of his watch
D.
in his cargo watch on deck
【单选题】Tested & inspected the steering systems & other navigational equipments & found them in good condition．L'dg & unl'dg finished.This remark is likely made by the OOW ______．
A.
at the beginning of his watch
B.
during his watch
C.
at the end of his watch
D.
in his cargo watch on deck
【单选题】[9-43]Tested & inspected the steering systems & other navigational equipments & found them in good condition.L'dg & unl'dg finished.
A.
at the beginning of his watch
B.
during his watch
C.
at the end of his watch
D.
in his cargo watch on deck
【单选题】Navigational systems have been improved; _______ planes can fly safely in fog and rough weather.
A.
however
B.
consequently
C.
subsequently
D.
nevertheless
【单选题】The EFIS comprises two identical systems supplying the captain and first officer with navigational information on two display screens. They are ( )
A.
EICAS and ECAM
B.
PDF and ND
C.
EADI and EHSI
D.
PFD and EADI
【单选题】With respect to automatic identification systems, which information is expected to be broadcast every 1 to 10 seconds?1rate of turn2latitude and longitude3navigational status
A.
①②
B.
②③
C.
①③
D.
①②③
【简答题】With the price of microchips dropping so drastically , future applications of GPS are virtually limitless. "The commercial industry is poised to explode," says Randy Hoffman of Magellan Systems Corp.,...
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