炮线阻值测量应该使用()进行测量。A、指针万用表 B、雷管测试仪 C、数字万用表 D、断线

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问题:

炮线阻值测量应该使用()进行测量。

A、指针万用表

B、雷管测试仪

C、数字万用表

D、断线测试仪

考点:石油地震勘探工石油地震勘探工中级石油地震勘探工中级题库
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已知函数f(x)=ax2+bx+3a+b是定义在[a-1,2a]上的偶函数,则a-b=______.

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设α、β是两个不同的平面,m、n是两条不同的直线,则下列结论不正确的是(  )
A.αβ,m⊥α,则m⊥βB.mn,m⊥α,则n⊥α
C.nα,n⊥β,则a⊥βD.m⊥n,m⊥α,则nα
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“蜂腰桥设言传心事”中的主要人物是谁?()

A、小红

B、司棋

C、晴雯

D、金钏

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Meet the “Tutor Kings and Queens”

“If you want to be a top tutor, it definitely helps if you are young and attractive. Students look at your appearance,” said Kelly Mok, 26, a “tutor queen” at King's Glory, one of Hong Kong's largest tutorial establishments.

Richard Eng from Beacon College, a former secondary school teacher, is often credited with being the first of Hong Kong's “star tutors”. “In school all the teachers look the same, there's no excitement,” he said.

The celebrity tutor phenomenon is a result of the huge growth in out­of­school tutoring in Asia. It is fuelled by highly pressured examination systems and ambitious parents wanting their children to secure places at top universities and high­status secondary schools.

In societies where success is_equated_with good exam results, parental anxiety converts into a “steady stream of revenue(收入)” for tutoring establishments, according to a study by the Asian Development Bank (ADB).

The tutoring industry, or “shadow education” as the ADB calls it, has become very widespread in Asia, fed by the growth in universities and the rising proportion of school leavers aiming for university. Hong Kong University's professor Mark Bray, one of the authors of the ADB study, said a staggering 72% of final­year school students in Hong Kong now go to private tutors.

It's not just Hong Kong. Tutoring has “spread and intensified(强化) in Asia and become more commercialized,” said Professor Bray. In South Korea, 90% of primary school children attend such classes. In China, New Oriental Education and Technology has grown to become one of the largest tutoring schools in Asia with around 2.4 million students this year. In South Korea, Thailand, Sri Lanka and India, tutorial schools use star tutors to attract even more students.

小题1:According to Kelly Mok, tutors ________.

A.have a lot in common with school teachers

B.benefit much from their appearances

C.become more and more popular in the world

D.have much more pressure than in the past小题2:Who is probably a “tutor king” in Hong Kong?

A.Kelly Mok.

B.Richard Eng.

C.Mark Bray.

D.Not mentioned.小题3:What Professor Bray says in this passage means that ________.

A.the number of school leavers is increasing

B.tutoring may improve achievement for individual students

C.star tutors have attracted 2.4 million students

D.more and more students in Asia go to private tutors小题4:The underlined part in Paragraph 4 is similar in meaning to ________.

A.is equal to

B.leads to

C.results in

D.is different from小题5:Where is this passage probably taken from?

A.An English newspaper.

B.A travel guide.

C.A fashion magazine.

D.A physics book.

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铣削铸铁脆性金属或用硬质合金铣刀铣削时,一般()切削液。

A、加

B、不加

C、加润滑为主的切削液

D、加冷却为主的切削液

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