要求用液控单向阀的压力机保压回路,在保压工况液压泵卸载,其换向阀应选用()中位机能。

题型:多项选择题

问题:

要求用液控单向阀的压力机保压回路,在保压工况液压泵卸载,其换向阀应选用()中位机能。

A.H型

B.M型

C.Y型

D.D型

考点:推土机司机考试推土机司机考试题库
题型:多项选择题

阅读下面两首元曲,回答问题。

[中吕]山坡羊·长安怀古

赵善庆

  骊山横岫,渭河环秀,山河百二还如旧。狐兔悲,草木秋;秦宫隋苑徒遗臭,唐阙汉陵何处有?山,空自愁;河,空自流。

[中吕]山坡羊·骊山怀古

张养浩

  骊山四顾,阿房一炬,当时奢侈今何处?只见草萧疏,水萦纡。至今遗恨迷烟树,列国周齐秦汉楚。赢,都变做了土;输,都变做了土。

(1)赏析“骊山横岫,渭河环秀”中“横”“环”二字的妙处。

 _____________________________________________________________

(2)有人说,两首怀古小令慨叹人生无常,思想消极遁世。请你结合相关诗句进行简略评述。

 _____________________________________________________________

题型:多项选择题

在保荐业务中,持续督导发行人应履行的义务有()。

Ⅰ.规范运作

Ⅱ.审慎工作

Ⅲ.信守承诺

Ⅳ.信息披露

A.Ⅱ、Ⅲ、Ⅳ

B.Ⅰ、Ⅱ、Ⅲ

C.Ⅰ、Ⅲ、Ⅳ

D.Ⅰ、Ⅱ、Ⅳ

题型:多项选择题

Perhaps only a small boy trained to be a wizard at the Hogwarts School of Magic could cast a spell so powerful as to create the biggest book launch ever. Wherever in the World the clock strikes midnight on June 20th, his followers will flock to get their paws on one of more than 10m copies of "Harry Potter and the Order of the Phoenix". Bookshops will open in the middle of the night and delivery firms are drafting in extra staff and bigger trucks. Related toys, games, DVDs and other merchandise will be everywhere. There will be no escaping Potter mania.

Yet Mr. Potter’s world is a curious one, in which things are often not what they appear. While an excitable media (hereby including The Economist, happy to support such a fine example of globalization) is helping to hype the launch of J. K. Rowling’s fifth novel, about the most adventurous thing that the publishers have organized is a reading by Ms. Rowling in London’s Royal Albert Hall, to be broadcast as a live web cast.

Hollywood, which owns everything else to do with Harry Potter, says it is doing even less. Incredible as it may seem, the guardians of the brand say that, to protect the Potter franchise, they are trying to maintain a low profile. Well, relatively low.

Ms. Rowling signed a contract in 1998 with Warner Brothers, part of AOL Time Warner, giving the studio exclusive film, licensing and merchandising rights in return for what now appears to have been a steal: some $ 500,000. Warner licenses other firms to produce goods using Harry Potter characters or images, from which Ms. Rowling gets a big enough cut that she is now wealthier than the queen--if you believe Britain’s Sunday Times rich list. The process is self-generating: each book sets the stage for a film, which boosts book sales, which lifts sales of Potter products.

Globally, the first four Harry Potter books have sold some 200m copies in 55 languages; the two movies have grossed over $1.8 billion at the box office.

This is a stunning success by any measure, especially as Ms Rowling has long demanded that Harry Potter should not be over-commercialized. In line with her wishes, Warner says it is being extraordinarily careful, at least by Hollywood standards, about what it licenses and to whom. It imposed tough conditions on Coca-Cola,. insisting that no Harry Potter images should appear on cans, and is now in the process of making its licensing programmed even more restrictive. Coke may soon be considered too mass market to carry the brand at all.

The deal with Warner ties much of the merchandising to the films alone. There are no officially sanctioned products relating to "Order of the Phoenix"; nor yet for "Harry Potter and the Prisoner of Azkaban", the film of the third book, which is due out in June 2004. Warner agrees that Ms. Rowling’s creation is a different sort of commercial property, one with long-term potential that could be damaged by a typical Hollywood marketing blitz, says Diane Nelson, the studio’s global brand manager for Harry Potter. It is vital, she adds, that with more to come, readers of the books are not alienated. "The evidence from our market research is that enthusiasm for the property by fans is not warning.\

Ms. Rowling’s reading in London’s Royal Albert Hall is mentioned to show()

A. publishers are really adventurous in managing the Potter’s business

B. businesses involved with Potter are moving along in an unusual way

C. the media are promoting Potter mania more actively than Hollywood

D. businesses are actually more credible than media in Potter’s world

题型:多项选择题

人工合成的植物激素类似物常用于生产实践,某课题组研究了激素类似物甲和激素类似物乙对微型月季生根和侧芽生长的影响,请回答下列问题:

由图1得出的初步结论是:甲和乙对微型月季插条生根的影响分别是()、()。

题型:多项选择题

热导式气相色谱仪当柱温恒定后,载气流速在一定的范围内变化仅影响()。

A、峰高

B、峰面积

C、保留时间

D、输出信号

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