男性，45岁，胆囊炎术后卧床3天，下地活动时突发胸痛伴呼吸困难

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问题单项选择题

男性，45岁，胆囊炎术后卧床3天，下地活动时突发胸痛伴呼吸困难。最可能的诊断是 ( )

A．大叶肺炎

B．急性心肌梗死

C．气胸

D．急性心包炎

E．急性肺栓塞

答案

参考答案：E

填空题

根据句子意思，用括号中所给单词的正确形式填空。

1. Something is wrong with your car. Don't worry, you can use __________ (we).

2. The __________ (high) you climb, the more beautiful view you will see.

3. Nancy is patient and she doesn't give up __________ (easy).

4. From June 1, supermarkets in China will not provide plastic bags (塑料袋) for free.

If__________ (shop) need one, they have to pay.

5. He seemed __________ (friend) at first, but now I've got to know him and I realize

he's warm and kind.

问答题简答题

定子冷却水系统（MKF）的作用是什么？