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【单选题】
列不是心律的心电图特点的是（）A.
p波在Ⅱ导联直立
B.
p波在aVR导联倒置
C.
p波在V5导联倒置
D.
P-R间期在0.12~0.20之间
E.
p波在aVF导联倒置
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举一反三
【单选题】Brian says the trend nowadays is for his customers to
A.
buy a sandwich to eat at their desk.
B.
smoke in the street at lunchtime.
C.
take a couple of breaks in the day.
【简答题】A．They cannot sleep well. B．They cannot eat well. C．They tend to bite each other. D．They tend to reproduce more.
【简答题】电磁流量计是利用（）原理制成的流量测量仪表。
【单选题】Mike says he needs ______. [ ]
A.
to eat anything
B.
to eat something
C.
eats something
D.
to eating something
【单选题】下列说法正确的是( )
A.
麦芽糖及其水解产物均能发生银镜反应
B.
蛋白质水解的最终产物是多肽
C.
乙烯和苯都能使溴水褪色，褪色的原因相同
D.
石油裂解和油脂皂化都是由高分子生成小分子的过程
【简答题】阅读理解 Food is very important. Everyone needs to eat well if he wants to have a strong body. Our minds also need a kind of food. This kind of food is knowledge(知识). When we are very young, we start gett...
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