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【单选题】
心律，多导联均出现提前的宽大畸形的QRS波群，其前无P波，代偿间期完全，T波方向与QRS主波方向相反，诊断为A.
频发房性期前收缩
B.
偶发房性期前收缩
C.
心律不齐
D.
室性期前收缩
E.
交界性期前收缩
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The steadily Rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water．
A.
gradually
B.
suddenly
C.
excessively
D.
exceptionally
【单选题】The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water．
A.
suddenly
B.
gradually
C.
excessively
D.
exceptionally
【单选题】Which of the following greatly influences the stability of the resultant hybrid?
A.
GC content of the probe
B.
AT content of the probe
C.
The molecular weight of the probe
D.
The size of the target gene
【单选题】You know that the appearance of the ()contributes greatly to the sale of the consumer packing.
A.
pack
B.
packed
C.
packing, package
【简答题】The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.'
【简答题】药品监督管理相关的其他部门及主要职责
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