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The fog is lifted，so ______ the radar．
A.close
B.open
C.switch off
D.switch on
参考答案
更多 “ The fog is lifted，so ______ the radar．A.closeB.openC.switch offD.switch on ” 相关考题
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单选题A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）A
When the towing vessel enters the fogB
When the drilling rig enters the fogC
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单选题The ship should reduce speed in the thick fog because of（）.A
the poor visibilityB
the fog signalsC
the fast speedD
the good sight
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单选题What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.A
Mention signal stations and ice，storm，traffic and port signalsB
Give the international numbers of lightsC
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Give the information on the lights and fog signals
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单选题Advection fog holds longest over which portions of the lakes? （）A
NorthwestB
SoutheastC
NortheastD
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单选题The fog most commonly encountered at sea is called（）.A
conduction fogB
radiation fogC
frontal fogD
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单选题Radiation fog is more commonly encountered in（）.A
springB
later winterC
autumnD
end of summer
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单选题The all-purpose nozzle will produce a fog spray when you（）.A
pull the nozzle handle all the way back toward the operatorB
pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzleC
push the nozzle handle forward as far as it will goD
insert a fog applicator between the fire hose and nozzle
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单选题High-velocity fog（）.A
is a finer，more diffuse water spray than low-velocity fogB
requires that the water pressure be no greater than 60 psiC
produces an effective fog pattern no more than 6 feet beyond the nozzleD
extinguishes a fire by absorbing heat and reducing the supply of oxygen
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单选题A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.A
no fog signalB
one short blastC
one prolonged and three short blastsD
one prolonged，one short，and one prolonged blast
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单选题Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.A
directly under the boomB
moving away from the boomC
stopped dead in the waterD
tied to the boom
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单选题An instrument useful in predicting fog is the（）.A
sling psychrometerB
microbarographC
anemometerD
aneroid barometer
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单选题Which kind of fog is also named as ground fog?（）A
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Radiation fogC
frontal fogD
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单选题（）gives listings of all lighthouses，lightships，lit floating marks（over 8m in height），fog signals and lights of navigational significance.A
Ocean Passages for the WorldB
Admiralty List of Radio SignalsC
IALA Maritime Buoyage SystemD
Admiralty List of Lights and Fog Signals
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单选题In dense fog a vessel without operational radar may not be justified（）at all but should anchor if it is safe and practicable for her to do so.A
to be underwayB
on under way conditionC
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单选题A combination or all-purpose nozzle produces（）.A
low-velocity fog onlyB
a solid stream onlyC
a solid stream and foamD
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单选题Cargo handling unit is rated according to the （） to be lifted.A
cargo craneB
jibC
safe working loadD
oil pressure
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单选题There was a heavy fog this morning，so none of the planes could _____.A
get throughB
take offC
pull outD
break away
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