消化管穿孔的体征 A．腹壁明显紧张，强直如木板 B．腹部柔韧有

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问题单项选择题

消化管穿孔的体征

A．腹壁明显紧张，强直如木板
B．腹部柔韧有抵抗力
C．前腹壁水平明显低下，肋弓和耻骨联合显露
D．腹部静脉迂曲变粗，显而易见
E．左腰部皮肤呈蓝色

答案

参考答案：A

句型转换

句型转换。

1. There will be more students in our class next term. (改为否定句)

________ ________ ________ more students in our class next term.

2. Lucy bought a dress for her mother. (对画线部分提问)

________ ________ Lucy ________ a dress for?

3. We ale eating dinner now. (用at this time yesterday改写句子)

We ________ ________ ________ at this time yesterday.

4. Tom said he would call Jim the next day. (改为直接引语)

"________ ________call Jim ________ ________'' Tom said.

5. Nobody can leave the gym during the party. (改为祈使句)

________ ________ the gym ________ the party.

单项选择题

下列压缩比大小对柴油机影响的一个不正确论述是（）。

A．压缩比越小，启动性能越差

B．压缩比增大，膨胀功增加

C．压缩比增大，热效率增高

D．压缩比越大，机械效率越高