下列哪些情况提示为重症急性胰腺炎（） A.血淀粉酶超过500U/L B.有休克症状

计算2x³÷x²的结果是[ ]

A．x

B．2x

C．2x⁵

D．2x⁶

FIDIC合同条款中，()是解决合同纠纷的最终解决途径。

A.调解 

B.协商 

C.行政调解 

D.仲裁

根据对话内容，补全对话，使其意思完整。每空只填一个词。

A: Excuse me, may I smoke here?

B: Look at the sign, please. It says "No Smoking".

A: Would you 1_______ my smoking in the office next door?

B: I'm afraid not. All the offices are non-smoking areas.

A: Oh, dear! 2_______ can I smoke, then?

B: There is a smoking room 3_______ the first floor. You may smoke there.

A: Sorry. I'm 4_______ here. Could you please show me the way?

B: Sure. Follow me, please. I'm afraid smoking is bad for your health.

    You'd better 5_______ it up.

A: Thanks for your advice. I'll think about it.

下列物质的用途主要利用其物理性质的是

A．用熟石灰中和化工厂废酸

B．碳酸钙做建筑材料

C．氢气是理想的清洁能源

D．小苏打治疗胃酸过多

紫外线波段（）

A.1000～5000μm

B.1000μm～760nm

C.760～400nm

D.5000～100000μm

E.400～180nm