皮皮学，免费搜题
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【单选题】
原发性免疫缺陷病的主要临床特点是A.
慢性反复感染史
B.
体质虚弱
C.
营养不良
D.
扁桃体小
E.
肝、脾肿大
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举一反三
【单选题】听力原文：W: I can't decide whether to buy that expensive new cat or the cheaper used car. M: I'd get the new one. It's better in the long run. Q: Why would the man buy the new car? (16)
A.
It's likely to last longer.
B.
It runs faster in long distances.
C.
It runs better than the used ear.
D.
It's probably a bigger car.
【单选题】听力原文：W：I can't decide whether to buy a new car or to try to find a second-hand one． M：If you buy a new one, you'll probably save money in the long run. Q：What does the man suggest to the woman? (15)
A.
Saving her money in the long mn.
B.
Buying a used car.
C.
Purchasing a new car.
D.
Getting a second-hand car.
【简答题】什么是直接接触触电?
【单选题】人体触电类型分为直接接触触电和间接接触触电两大类。直接接触触电又分为单相触电和两相触电；间接接触触电又分为跨步电压触电和接触电压触电。详见第六章第六节。（）指的是电气设备绝缘损坏，漏电时人体接触带电体触电。
A.
跨步电压电击；
B.
单相电击；
C.
接触电压电击；
D.
两相电击。
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