若-3x2my3与2xy2n是同类项,则|m-n|的值是( ) A.0 B.1

题型:选择题

问题:

若-3x2my3与2xy2n是同类项,则|m-n|的值是(  )

A.0

B.1

C.7

D.-1

考点:同类项
题型:选择题

根据句意和首字母或汉语提示完成单词,使句子正确、句意通顺。

1. A q_______ is another way of saying 15 minutes.

2. If you eat too much fast food or sweets, you'll put on w________.

3. The doctor told me to take the m________ three times a day.

4. My daughter wants to be a dentist in order to take care of people's t________.

5. — I haven't been to Beijing before. How about you, Tom? — Me n________.

6. Most small children enjoy ________ off (炫耀) in front of visitors.

7. Could you give me some ________ (建议) on the coming concert?

8. There goes the bell. Let's stop ________ (讨论) and have a break.

9. Mr Liu is very kind, ________ (耐心) and friendly to his students.

10. The worker showed us how to build the bridge ________ (安全).

题型:选择题

对高度怀疑肠结核的病例中,下列最有利于临床诊断的是

A.抗结核治疗2~6周有效

B.有腹痛、腹泻、右下腹压痛

C.有肠外结核

D.PPD试验阳性

题型:选择题

下面哪一位学者认为奴隶制是合理的()

A、卢梭

B、普芬道夫

C、伏尔泰

D、密尔

题型:选择题

kloosterman认为对数学学习的信念包括()种。

A.2

B.3

C.4

D.5

题型:选择题

闭合10K或手动2QA风泵不泵风,如何判断处理(YD为串励电机)?

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