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【单选题】
雷达定时器是雷达整机工作的指挥中心,其产生的脉冲是______。A.
射频脉冲
B.
发射脉冲
C.
周期性触发脉冲
D.
视频脉冲
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反馈参考答案：
举一反三
【单选题】.I’m _____Helen. Have you seen her? (A) A. B. C. D.
A.
looking for
B.
looked for
C.
looks for
D.
look for
【单选题】Have you seen her _____ movie? It has very good reviews.
A.
latest
B.
last
C.
late
D.
latter
【简答题】When driving in an automated lane, the driver ________. A) should harmonize with newly entering cars B) doesn’t have to rely on his computer system C) should watch out for potential accidents D) doesn...
【单选题】The taxi driver often reminds passengers to ______their belongings when they leave the car.
A.
keep
B.
catch
C.
hold
D.
take
【单选题】The taxi driver often reminds passengers to ______their belongings when they leave the ear.
A.
keep
B.
catch
C.
hold
D.
take
【简答题】 Have you seen her ________ (最新的)movie?
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