When is the parallel sweep search used?

题库:船长 类型:最佳选择题 时间:2019-02-14 17:22:46 免费下载:《甲类船长英语考证》Word试卷

When is the parallel sweep search used?
A.When searching a small area
B.When searching a large area
C.When searching over hilly terrain
D.When searching during night

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