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【单选题】
军事活动的核心内容是（）。A.
国防建设
B.
教育训练
C.
军队建设
D.
作战
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皮皮学刷刷变学霸
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【单选题】Mr Zhang _______ his cap and sat down as soon as he entered the room. [ ]
A.
took off
B.
took out
C.
took away
D.
took down
【单选题】He took down the name _______ he should forget it.
A.
in that
B.
for fear that
C.
except that
D.
as if
【单选题】He always took a notebook with him _________he could take down something important at all times and all places.
A.
because
B.
so that
C.
in case
D.
if only
【单选题】ZigBee网络拓扑类型不包括( )。
A.
星型
B.
网状
C.
环形
D.
树形
E.
单选题
F.
实施农产品的跟踪与追朔，需要在农产品供应链的各个环节上对农产品信息进行标识、采集、传递和关联管理。其实质就是要形成一条完整的( )，使得农产品的信息流、物流联系起来，根据农产品的信息追查农产品的实体。
G.
/计算机
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