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问题 单项选择题

骨盆骨折最为重要的体征是

A．局部肿痛

B．局部压痛及间接挤压痛

C．反常活动

D．畸形改变

E．骨擦音及骨擦感

答案

参考答案：B

解析：骨盆骨折主要的体征是骨盆挤压和分离试验阳性。

填空题

根据句意和首字母提示完成单词。

1. Many b______ are in the fruit shop.

2. In our school the students like t______ for lunch.

3. Eating v______ is good for our health.

4. An apple is a kind of f______ .

5. He likes salad and h______ very much.

6. My parents have d______ at 6:00 in the evening.

7. Does he like e______ for breakfast?

8. Fruit and vegetables are h______ food.

9. Let's eat eggs for b______ this morning.

10. Deng Yaping is a sports s______.

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单项选择题

与其他种类的镗床相比，坐标镗床比较突出的特点是（）。

A.主轴转速高，进给量大

B.有精确坐标测量系统

C.适合于加工较大平面

D.微调整量可达10μm
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