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【单选题】
近距离范围内目标发生急剧的方位变化,将可能使ARPA作产生下列哪种现象:A.
目标交换
B.
目标丢失
C.
跟踪精度下降
D.
碰撞危险报警
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】------Look at the black clouds. It soon. ------Sure, if only we out.
A.
is raining didn’t come
B.
is to rain won’t start
C.
will rain haven’t started
D.
is going to rain hadn’t come
【单选题】The clerk must have _____ your name, because he said you weren’t here.
A.
arranged
B.
compelled
C.
overlooked
D.
appointed
【单选题】The black clouds over the mountain were the of a coming storm.
A.
sign
B.
character
C.
nature
D.
end
【简答题】The clerk must have your name, because he said you weren't here. (overlook)
【单选题】The clerk must have your name, because he said you weren’t there.
A.
overlooked
B.
overwhelmed
C.
noticed
D.
noted
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