拌制沥青混凝土应选什么样的粗骨料

产生急性溶血反应的主要原因是（）。

A.严重的过敏反应

B.ABO血型不合

C.血液被细菌污染

D.血液被真菌污染

E.血液被病毒污染

完成对话。 在对话的空格中填上适当的单词，使对话完整正确。一空一词。

A: Do you ever eat fast food?

B: Yes, I do.

A: What kind of fast food do you usually eat?

B: Oh, you know, hamburgers, sandwiches and pizza.

A: OK. And how often do you eat fast food? Every day. more than once a week or

    1______ than once a week?

B: Well, Monday to Friday when I'm working, almost 2______ day, but I never have it on 3______.

A: And what 4______ of the day do you eat fast food?

B: Well, at work as I said, you know at lunch time. Sometimes, if I'm going out and I have no time to

    5______ for myself in the evening, then I'll buy some fast food.

A: And what do you think of the fast food? Is it really as you said "6______ "?

B: Sure, that's 7______ of the main reason that I eat it.

A: Do you often say to your friends that in some way it tastes good?

B: Yes, I 8______ it's not as good as the food in restaurants, but it's not bad.

A: Is fast food good for you?

B:  No, standing up and eating quickly is a little bad. The food 9______ isn't healthy. You know there're

   not enough vegetables and fruit. I am 10______ for the convenient meals. In this way I can have more

    spare time.

急性痛风性关节炎最常受累的部位是（）。

A.踝关节

B.膝关节

C.腕关节

D.肘关节

E.第一跖趾关节

下面哪种不是外伤性颈动脉海绵窦瘘的主要临床表现（）

A.搏动性突眼

B.颅内杂音

C.眼结膜充血水肿

D.眼球运动障碍

E.面部疼痛

高压设备发生接地时，室内不得靠近故障点（）米以内，室外不得接近故障点（）米以内。