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【单选题】
关于前置胎盘的临床表现,下列哪一项是正确的
A.
前置胎盘阴道流血发生时间、反复发生次数、出血量多少与前置胎盘的类型无关
B.
前置胎盘的初次出血量较多
C.
前置胎盘的典型症状是妊娠晚期无痛性阴道流血
D.
胎盘位置越低,阴道流血出现越晚
E.
前置胎盘患者子宫局部有压痛
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A.
正确
B.
错误
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A.
on
B.
at
C.
to
D.
into
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A.
to
B.
At
C.
into
D.
On
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A.
B.
报文
C.
比特
D.
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A.
to
B.
at
C.
into
D.
on
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A.
to
B.
at
C.
into
D.
On
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A.
比特,包
B.
包,帧
C.
比特,帧
【单选题】Last week the writer went to the theatre . He was the theatre.
A.
to
B.
at
C.
into
D.
on
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【单选题】数据链路层的单位是
A.
B.
C.
D.