质量法测定脂肪的含量结果分别为37.40％、37.20％、37.30％、37.50％

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问题单项选择题

质量法测定脂肪的含量结果分别为37.40％、37.20％、37.30％、37.50％、37.30％，其绝对平均偏差是（）。

A.0.88%

B.0.24%

C.0.010%

D.0.122%

答案

参考答案：A

单项选择题

在保险合同有效期间，一旦发生合同约定的保险事故，投保人就可以获得大大超过所支付的保险费的赔偿额，而如果在此期间无保险事故发生，则投保人将一无所获，说明保险合同是()。

A.射幸合同

B.双务有偿合同

C.附合合同

D.要式合同

补全对话，情景问答

补全对话，每空一词。

A: Oh,dear, you 1 eat in the classroom.

B: I'm sorry. I'm a new exchange student here. I don' t know the 2 .

A: It doesn't matter. 3 careful next time.

B: Can we eat in school?

A: You can eat 4 the dining hall,but you can't eat in the classroom.

B: I see.Anything 5 ?

A: You can't arrive late 6 class. You can't listen 7 music in the classrooms or hallways.

Especially you mustn't 8 in the hallways. You may hit others.

B: I remember now. Thanks. My name is Keiko. 9 Australia.

A: My name is John. Welcome 10 America.