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【单选题】
关于孕激素的描述下列哪项错误( )A.
妊娠早期由卵巢妊娠产生
B.
妊娠8～10胎盘产生
C.
合体滋养细胞产生
D.
为留体激素
E.
代谢产物为雌二醇
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举一反三
【单选题】柱构件在基础横向锚固区内箍筋的间距不大于（ ） 。
A.
5d(d为搭接钢筋最大直径)；
B.
5d(d为搭接钢筋最小直径)；
C.
10d(d为搭接钢筋最大直径)；
D.
10d(d为搭接钢筋最小直径)；
【单选题】Press the white button on the armrest and lean ______________the seat at the same time.
A.
of
B.
at
C.
in
D.
against
【单选题】Press the white button on the armrest and lean _____ the seat at the same time.
A.
against
B.
back
C.
front
D.
to
【单选题】Press the white button on the armrest and lean ______________ the seat at the same time.
A.
across
B.
among
C.
against
D.
another
【简答题】Press the white button on the armrest and lean ______________ the seat at the same time.
【多选题】How does the author summarize the volunteer experience?
A.
She will remember this experience forever.
B.
It is valuable.
C.
It is hard and tiring.
D.
It is irrelevant and useless now.
【单选题】柱构件在基础横向锚固区内箍筋的间距不小于( ) 。
A.
5d(d为搭接钢筋最大直径);
B.
5d(d为搭接钢筋最小直径);
C.
10d(d为搭接钢筋最大直径);
D.
10d(d为搭接钢筋最小直径);
【简答题】Press the white button on the armrest and lean ______________the seat at the same time.
【单选题】Press the white button on the armrest and lean against the seat ______________.
A.
on time
B.
in time
C.
at the same time
D.
make up time
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