The starting of a marine diesel engine is

题型:单项选择题

问题:

The starting of a marine diesel engine is generally carried out with the assistance of ().

A.compressed air

B.electricity

C.hydraulic oil

D.compressing air

考点:轮机英语船舶动力装置船舶动力装置题库
题型:单项选择题

“震耳欲聋“反映了声音的 ______很大;“声音刺耳“反映了声音的 ______很高;我们能够分辨出各种不同乐器的声音,是因为它们的 ______不同.

题型:单项选择题

Violin prodigies(神童), I learned, have come in distinct waves from distinct regions. Most of the great performers of the late 19th and early 20th centuries were born and brought up in Russia and Eastern Europe. I asked Isaac Stern, one of the world’s greatest violinists, the reason for this phenomenon. “It’s very clear, “he told me. “They were all Jews and Jews at the time were severely oppressed and ill-treated in that part of the world. They were not allowed into the professional fields, but they were allowed to achieve excellence on a concert stage.” As a result, every Jewish parent’s dream was to have a child in the music school because it was a passport to the West.

Another element in the emergence of prodigies, I found, is a society that values excellence in a certain field and is able to nurture (培育) talent. Nowadays the most nurturing societies seem to be in the Far East. “In Japan, a most competitive society with stronger discipline than ours,” says Isaac Stern, “children are ready to test their limits every day in many fields, including music. When Western music came to Japan after World War II, that music not only became part of their daily lives, but it became a discipline as well.” The Koreans and Chinese, as we know, are just as highly motivated as the Japanese.

That’s a good thing, because even prodigies must work hard. Next to hard work, biological inheritance plays an important role in the making of a prodigy. J. S. Bach, for example, was the top of several generations of musicians, and four of his sons had significant careers in music.

小题1:Jewish parents in Eastern Europe longed for their children to attend music school because ______.   

A.it would allow them access to a better life in the West

B.Jewish children are born with excellent musical talent

C.they wanted their children to enter into the professional fields

D.it would enable the family to get better treatment in their own country小题2: Nurturing societies as mentioned in the passage refer to societies that ______.

A.enforce strong discipline on students who want to achieve excellence

B.treasure talent and provide opportunities for its full development

C.encourage people to compete with each other

D.promise talented children high positions小题3:Japan is described in the passage as a country that attaches importance to ______.

A.all-rounded development

B.the learning of Western music

C.strict training of children

D.variety in academic studies小题4:Which of the following contributes to the emergence of musical prodigies according to the passage?

A.A natural gift.

B.Extensive knowledge of music.

C.Very early training.

D.A prejudice-free society.

题型:单项选择题

在英国维多利亚时代(1837-1901年),一方面,有贵族宫殿式的庄园生活;另一方面,则是农人破败的茅屋草舍。一方面,是工厂主舒适的生活享受;另一方面,则是失业工人绝望的生存挣扎。这一时期英国著名的保守党首相迪斯雷利曾把英国说成是一个“两个民族”的国家,“当茅屋不舒服时,宫殿是不会安全的。”材料主要说明

A.工业化带来了一定的社会危机

B.圈地运动加剧了社会阶层的分化

C.英国的产业结构不够科学合理

D.自由主义政策不再适应经济发展

题型:单项选择题

当起重量大于相应档位的额定值并小于额定值的110%时,起重量限制应当动作,使塔机停止()方向的运行

A.上升

B.下降

C.左右

D.上下

题型:单项选择题

理想气体经节流后,其内能将()。

A.减小

B.增大

C.不变

D.不一定

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