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【简答题】
如果甲：乙=3，由（甲÷5）：（乙÷5）=______．
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举一反三
【简答题】Silk production has a long and colourful history unknown to most people. Scientific discoveries have shown that silk production existed in China from around 2500 B.C., although it could be much older....
【单选题】产后出血是指
A.
胎盘娩出后24小时内出血达500ml
B.
胎儿娩出后24小时内出血达500ml
C.
产后10天内出血达500ml
D.
产褥期出血500ml
E.
产后2周内出血达500ml
【单选题】We regret to report that a consignment of silk piece goods () Order No. 567 has not been delivered.
A.
with
B.
for
C.
on
D.
under
【简答题】无线传感网络系统通常包括()、汇聚节点和管理节点
【简答题】无线传感网络系统通常包括 、 和
【单选题】产后出血是指
A.
胎盘娩出后24小时内出血达400ml
B.
胎儿娩出后24小时内出血达500ml
C.
产后10天内出血达500ml
D.
产后2周内出血达500ml
E.
产褥期出血500ml
【单选题】I like this silk dress, and it _______ so soft and comfortable. [ ]
A.
is feeling
B.
feels
C.
has felt
D.
is felt
【单选题】Cave exploration, which has come to be known in recent years, is a ________ new sport. [ ]
A.
relatively
B.
gradually
C.
publicly
D.
strictly
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