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Radar is not only to obtain ________ ，but also to measure their distances away from you．
A.brightness of objects
B.color of targets
C.shape of targets
D.bearings of objects
参考答案
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Radar is not only to obtain ______, but also to measure their distance away from you.A.brightness of objectsB.color of targetsC.shape of targetsD.bearing of objects
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A hand held instrument used to measure distances between objects and the ship is a ______.A.vernierB.psychrometerC.hygrometerD.stadimeter
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单选题The function of a lubricating oil is （） to lubricate the running surface （） to carry away a great deal of heat.A
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单选题The common way to obtain your ship’s position is（）.A
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单选题Johanna ______ that attending college only two towns away from where she grew up would result in her developing too ______ an outlook.A
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hoped, limitedE
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单选题（）is an equipment used to detect the presence of ships ,buoys,coast and many other targels and to obtain range and bearing of these targets.A
The marine sextantB
The chronometerC
The echo sounderD
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单选题Which conditions will normally cause a SART to operate in the active mode?（）A
It will respond only to interrogation by 9-Ghz radar signalsB
A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters highC
A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical milesD
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单选题What is the name of the movable，radial guide line used to measure direction on a radar?（）A
Compass roseB
CursorC
Plan position indicatorD
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单选题A navigator fixing a vessel’s position by radar （）.A
can use radar information from one object to fix the positionB
should never use radar bearingsC
should only use radar bearings when the range exceeds the distance to the horizonD
must use information from targets forward of the beam
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单选题Which statement is true concerning a vessel equipped with operational radar?（）.A
The Master of the vessel must be on the bridge when the radar is in useB
The radar equipment is only required to be used in restricted visibilityC
The use of a radar excuses a vessel from the need of a look-outD
This equipment must be used to obtain early warning of risk of collision
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单选题若包装箱上标示下图标志是指（）。A
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keep away from heatC
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单选题Radar is used to not only to look（）,but also to measure their distances away from you.A
at obscured objectsB
forward submerged targetsC
up exposed targetsD
for unseen objects
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单选题A hand held instrument used to measure distances between objects and the ship is a（）.A
vernierB
psychrometerC
hygrometerD
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单选题According to the passage, which of the following statements is true?A
The imaging techniques not only measure nerve-cell activity but also the extra flow of blood that surges to the most active brain areas.B
The imaging techniques do not measure nerve-cell activity directly, but measure the flow of blood that surges to the most active brain areas.C
The imaging techniques measure the extra flow of blood that surges to the most active brain areas.D
The imaging techniques measure all the activities of the living brain.
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单选题Radar is not only to obtain（），but also to measure their distance away from you.A
brightness of objectsB
color of targetsC
shape of targetsD
bearing of objects
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判断题Syntax is different from morphology in that the former not only studies the morphemes, but also the combination of morphemes into words and words into sentences.A
对B
错
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单选题Which statement is TRUE concerning a vessel equipped with operational radar?（）.A
She must use this equipment to obtain early warning of risk of collisionB
The use of a radar excuses a vessel from the need of a look-outC
The radar equipment is only required to be used in restricted visibilityD
The safe speed of such a vessel will likely be greater than that of vessels without radar
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