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【单选题】
心源性哮喘与支气管哮喘主要不同点是()。A.
病史较长, 反复发作
B.
心前区收缩期杂音
C.
心脏扩大伴奔马律
D.
两肺干湿罗音
E.
无肺气肿体征
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反馈参考答案：
举一反三
【简答题】a×6+6×15=______×（______+______）．
【单选题】某企业购买材料设备后交付承运人运输,未按约定给付承运费用时,承运人有权扣留 足以清偿其所欠运费的货物,承运人行使的是( )。
A.
抵押权
B.
质权
C.
留置权
D.
所有权
【单选题】We had only been driving for an hour when the car ______ petrol. [ ]
A.
was run out of
B.
was run out
C.
ran out of
D.
ran out
【单选题】We had been driving for hours ___________I realized that something was wrong with one of the tyres.
A.
as
B.
when
C.
while
D.
until
【简答题】______÷5=6：______=0.6= 15 () =______：15．
【简答题】15 ( ) =6：______=3÷5= ( ) 15 =______%=______（小数）
【单选题】As we were driving along we saw a good restaurant, so we stopped（）dinner.
A.
having
B.
to have
C.
having been
D.
to be had
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