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第1题
Implied but not stated ______ .
A.Laser-dopple radar is more accurate than microwave radar
B.Microwave radar may not ensure absolute precision in measuring varying speeds
C.The light-beam radar can measure only slow speeds with accuracy
D.Microwave radar operates at a higher frequency than laser-dopple radar
第2题
Implied but not stated is that ______. ()
A.laser-doppler radar is more accurate than microwave radar
B.microwave radar may not ensure absolute precision in measuring varying speeds
C.the light-beam radar can measure only slow speeds with accuracy
D.microwave radar operates at a higher frequency than laser-doppler radar
第3题
Implied but not stated is that ______.
A.laser-doppler radar is more accurate than microwave radar
B.microwave radar may not ensure absolute precision in measuring varying speeds
C.the light-beam radar can measure only slow speeds with accuracy
D.microwave radar operates at a higher frequency than laser-doppler radar
第4题
Implied but not stated ______.
A.Laser-dopple radar is more accurate than microwave radar
B.Microwave radar may not ensure absolute precision in measuring varying speeds
C.The light-beam radar can measure only slow speeds with accuracy
D.Microwave radar operates at a higher frequency than laser-dopple radar
第5题
Implied but not stated is that__________.
A.laser—doppler radar ismore accurate than microwave radar
B.microwave radar operatesat a higher frequency than laser—doppler radar
C.the light—beam radar canmeasure only slow speeds with accuracy
D.microwave radar may notensure absolute precision in measuring varying speeds
第6题
Implied but not stated is that__________.
A.laser—doppler radar ismore accurate than microwave radar
B.microwave radar operatesat a higher frequency than laser—doppler radar
C.the light—beam radar canmeasure only slow speeds with accuracy
D.microwave radar may notensure absolute precision in measuring varying speeds
第7题
Laser-doppler radar makes use of______.
A.light
B.microwaves
C.sound waves
D.both A and B
第8题
A、A.raising the antenna height increases the radar range
B、B.the ability of radar to detect objects is unaffected by weather conditions
C、C.radar bearing are less accurate than radar range
D、D.radar should be checked regularly during clear weather to ensure that it is operating properly
第9题
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