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【单选题】
(2.11B)呼吸衰竭常见的诱发因素是A.
精神因素
B.
过敏因素
C.
长期吸烟
D.
肺部感染
E.
过度劳累
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反馈参考答案：
举一反三
【单选题】晶体管三个电极的电流关系为（ ）。
A.
I C ＝ I E ＋ I B
B.
I E ＝ I C ＋ I B
C.
I B ＝ I E ＋ I C
D.
I E ＝ I B
【简答题】阅读理解。 Tom walked into a shop. It had a sign outside : 'Second-hand (旧的) clothes bought and sold. ' He was carrying an old pair of trousers and asked the owner of the shop, 'How much will you give me f...
【单选题】关于上臂丛神经麻痹以下描述不正确的是（）
A.
患侧上臂外展内旋
B.
第5、6颈神经根受损者
C.
患侧下臂伸展内旋
D.
部分屈曲手指面向后方
E.
常伴有霍纳综合征
【单选题】晶体三极管三个电极电流的关系为（）。
A.
I E =I C +I B
B.
I B =I C +I E
C.
I C =I E +I B
D.
I E =I C -I B
【单选题】处于放大电路的三极管三个电极间的电流关系为 ___ __ __ 。
A.
i c = i b + i e
B.
i e = i b + i c
C.
i b = i c + i e
【简答题】阅读理解。 Tom walked into a shop. It had a sign out- side. 'Second-hand' clothes bought and sold.” He was carrying an old pair of trousers and asked the owner of the shop, 'How much will you give me for ...
【单选题】关于上臂丛神经麻痹以下描述不正确的是（）。
A.
第5、6神经根受损者
B.
患者上臂外展内旋
C.
患者下臂伸展内旋
D.
部分屈曲手指面向后方
E.
常伴有霍纳综合征
【简答题】Tom walked into a shop . It had a sign outside : 'Second-hand (旧的) clothes bought and sold . 'He was carrying an old pair of trousers and asked the owner of the shop, 'How much will you give me for th...
【简答题】晶体三极管三个极电流之间的关系式为 I E = 。
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