近年来,雾霾天气在我国频繁出现,空气质量问题已引起全社会高度关注。下图是气温垂直

题型:选择题

问题:

近年来,雾霾天气在我国频繁出现,空气质量问题已引起全社会高度关注。下图是气温垂直分布的4种情形。读图完成下列问题。

小题1:图中雾霾天气最严重的是(  )   

A.①

B.②

C.③

D.④小题2:图中最有利于雾霾大气污染物扩散的情形是(  )

A.①

B.②

C.③

D.④

考点:大气的水平运动热力环流
题型:选择题

I am Lin Feng. This is a picture of my family: my grandfather, my grandmother, my father, my mother, my sister and I. My grandparents are in Beijing now and we are in Zhejiang. My mother is a teacher and my father is a doctor. My sister and I are middle school students. My sister is in Class 1,Grade 8 and I am in Class2, Grade 7. I have a good friend here. Her name is Zhang Ning. We are in the same(相同的) class.

小题1:There are _____ people(人;人们) in Lin Feng’s family.

A.three

B.four

C.five

D.six小题2:Lin Feng’s grandparents are in _________now

A.Beijing

B.Shanghai

C.Zhejiang

D.Tianjing小题3:Lin Feng’s mother is ________.

A.a student

B.a teacher

C.a doctor

D.a farmer小题4:What class is Zhang Ning in?

A.Class Two, Grade Seven

B.Class One, Grade Seven

C.Class Two, Grade Eight

D.Class One, Grade Eight 小题5:The passage (文章)is about (关于)__________

A.Lin Feng’s family

B.Lin Feng’s parents

C.Lin Feng’s friend

D.Lin Feng’s school

题型:选择题

如图所示匀强电场E的区域内,在O点处放置一点电荷+Q,a、b、c、d、e、f为以O点为球心的球面上的点,aecf平面与电场平行,bedf平面与电场垂直,则下列说法中正确的是(  )

A.b、d两点的电场强度相同,电势相等

B.a、c两点的电场强度不同,电势相等

C.bedf平面是个等势面,aecf平面中a点电势比c点电势高

D.在球面上任意两点间移动电荷,电场力做功可能不为零

题型:选择题

水样中氨氮的测定方法常选用()

A阳极溶液伏安法

B二苯碳酰二井分光光度法

C钠氏试剂分光光度法

D钼酸盐分光光度法

题型:选择题

电话银行客户分为以下哪几类()。

A、电话客户

B、签约客户

C、非签约客户

D、非电话客户

题型:选择题

患儿男,生后2天,出生体重为2400g。因吸入性肺炎入院,入院时患儿呼吸急促,口唇稍发绀。即置于辐射保暖床上抢救。

该患儿吸氧的流量应选择每分钟为()

A.1L

B.2L

C.3L

D.4L

E.5L

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