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【单选题】
前置胎盘出现阴道流血时,下列描述正确的是( )A.
常发生在妊娠晚期或临产时
B.
常伴有下腹部疼痛
C.
阴道流血量与贫血程度不成比例
D.
妊娠38出现阴道流血应考虑为完全性前置胎盘
E.
边缘性前置胎盘出血时间早,出血量多,容易出现失血性休克
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举一反三
【单选题】如果要快速复制一个图形，要先用“选择工具”选择要复制的图形，然后按住（ ）键的同时，拖曳鼠标快速复制图形。
A.
Shift
B.
Insert
C.
Ctrl
D.
Home
【单选题】Was it in 1998 ____ he was still at middle school ____ this boy became expert at computer?
A.
that; where
B.
when; where
C.
in which; in which
D.
when; that
【简答题】A. It has over 500 employees. B. It was started in 1998. C. It has several branches. D. It is located in Beijing.
【单选题】如果要快速复制一个图形,要先用“选择工具”选择要复制的图形,然后按住( )键的同时,拖曳鼠标快速复制图形。
A.
Insert
B.
Shift
C.
Home
D.
Ctrl
【多选题】如果要快速复制一个图形,要先用“选择工具”选择要复制的图形,然后按住( )键的同时,拖曳鼠标快速复制图形。
A.
home
B.
ctrl
C.
shift
D.
alt
【单选题】如果要快速复制一个图形,要先用“选择工具”选择要复制的图形,然后按住( )键的同时,拖曳鼠标快速复制图形。
A.
Insert
B.
Home
C.
Shift
D.
Ctrl
【单选题】A.It has over 500 employees. B.It was started in 1998. C.It has several branches. D.It is located in Beijing.
A.
It has over 500 employees.
B.
It was started in 1998.
C.
It has several branches.
D.
It is located in Beijing.
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