列式计算. (1)0.6除30.18的商再加上17.2,和是多少? (2)50.

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问题:

列式计算.

(1)0.6除30.18的商再加上17.2,和是多少?

(2)50.01与2.5的差,乘2.8的积是多少?

考点:小数的四则混合运算及应用
题型:解答题

瓜蒂散的组成是

A.瓜蒂、赤小豆

B.瓜蒂、生姜

C.瓜蒂、小茴香

D.瓜蒂、藜芦

E.瓜蒂、食盐

题型:解答题

用括号内所给词的适当形式填空(每空不限一词)。

1. My hobby is reading comic books. What about ______ (you)?

2. Three ______ (five) of the students in our class are League members.

3. I don't think it's always right to be busy ______ (make) money all day.

4. He left home in a hurry because he had some problems ______ (solve) in his office.

5. I don't like traveling by plane. I think it's ______ (safe) to travel by train.

6.  ______ (luck), modern medicine can help people with eye problems in less developed countries.

7. They ______ (plan) a trip to Disneyland at this time yesterday.

8. —Excuse me, where is the ______ (lady) room. —It's over there.

9. I am ______ (excite) about passing the final exams.

10. He speaks Chinese very well though he is a ______ (Canada).

题型:解答题

如图所示,图线a是线圈在匀强磁场中匀速转动时所产生正弦交流电的图象,当调整线圈转速后,所产生正弦交流电的图象如图线b所示,以下关于这两个正弦交流电的说法正确的是

[ ]

A.在图中t=0时刻穿过线圈的磁通量均为零

B.线圈先后两次转速之比为3:2

C.交流电a的瞬时值为V

D.交流电b的最大值为V

题型:解答题

为比较某两所大学18岁男大学生身高,甲、乙两人分别进行调查,结果经t检验,甲:t>t0.01,65,乙:t>t0.05,65,可认为()

A.甲、乙结果有矛盾

B.甲、乙结果基本一致

C.甲更有理由认为两总体均数不等

D.甲说明两总体均数差别很大

E.乙更有理由说明两总体均数差别很大

题型:解答题

出租汽车运价的调整,应由()按法定程序进行运价调整。

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