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【单选题】
2992 船舶航行时,雷达选择对运动显示方式,荧光屏上显示的位置静止不动的物标是-------。A.
.同向同速船
B.
小岛等静止的物标
C.
水上漂浮物
D.
同向船
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举一反三
【多选题】(13-17)出境时需走红色通道的情况有_____。
A.
文物
B.
超出入境时报关数量的外币
C.
样品
D.
携带带入境内而应带出境外物品者
E.
成年旅客携带的香烟400支
【单选题】I have written to him because he phoned me shortly afterwards.
A.
ought to
B.
must
C.
couldn’t
D.
needn’t
【简答题】I have written to her because she phoned me shortly afterwards. (couldn't, needn't)A. needn't
【单选题】I have written to both Frank and Henry but______has replied.
A.
either
B.
both
C.
neither
D.
none
【单选题】I have written to my pen pal and now I’m ___his letter
A.
looking for
B.
looking after
C.
looking forward to
D.
looking up
【单选题】I have written to her because she phoned me shortly afterwards. (couldn't, needn't)
A.
couldn't
B.
needn't
【单选题】I have written to______the invitation.
A.
admit
B.
accept
C.
acceptance
D.
acceptable
【简答题】在计算机系统中,I/O设备与主机交换信息时,共有5种控制方式,分别是___________方式、___________方式、___________方式、I/O通道方式和I/O处理机方式。
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