高压油泵调速器中润滑油过多,会造成柴油机()。 A.温度过高 B.机油压力低 C.飞

题型:单项选择题

问题:

高压油泵调速器中润滑油过多,会造成柴油机()。

A.温度过高

B.机油压力低

C.飞车

D.喷油泵不供油

考点:吊车司机考试中级吊车司机考试中级吊车司机考试题库
题型:单项选择题

辨析题:认识来源于实践,又指导实践,但只有正确的认识才能对实践有积极的指导作用。因此,在实践中必须获得正确认识,尽量避免任何错误。(10分)

题型:单项选择题

阅读理解。

     Tom Brennan was working in a Philadelphia office building when he noticed a black bag. The bag

contained a book.

     This chance discovery ended a 12-day search by the Library Company of Philadelphia for a historical

treasure--a 120-page diary kept 190 years ago by Deborah Logan, "a woman who knew everybody in her

day," James Green, the librarian told the magazine American Libraries.

      Most of the diary is a record of big events in Philadelphia. It also includes a description of British

soldiers burning Washington D.C. in the war of 1812. She describes President James Madison on horseback

as "perfectly shaking with fear" during the troubled days. George Washington, she writes, mistook her for

the wife of a French man, and praised her excellent English. The adventure of the lost book began

September 4 when Cory Luxmoore arrived from England to deliver the diary of his ancestor to the Library

Company, which he and his wife considered to be the best home for the diary.

     Green told American Libraries he had the diary in his possession "about five minutes" when Luxmoore

took it back because he had promised to show it to one other person. On returning to his hotel after showing

the precious book to Green, Luxmoore was shocked to realize that he had left it in the taxi.

     Without any delay, Green began calling every taxi company in the city, with no luck, "I've felt sick

since then," Luxmoore told reporters. According to Green, no one has yet learned how the diary came to

the office building. Tom Brennan received a reward of 1,000, Philadelphia gained another treasure for its

history, and Luxmoore told reporters, "It's wonderful news. I'm on high".

1. This article mainly tells about the story of _____.

A. a lost diary

B. Deborah Logan

C. Cory Luxmoore

D. the Library Company

2. From the text, we learn that the diary is now owned by _____.

A. Tom Brennan

B. an unknown person

C. a Philadelphia magazine

D. the Library Company of Philadelphia

3. Philadelphia is thought to be the best home for the diary because ______.

A. it was written in Philadelphia

B. it tells stories about Philadelphia

C. people in the city are interested in old things

D. the British and the Americans once fought in Philadelphia

4. What did Cory Luxmoore mean when he said "I'm on high"?

A. I'm rich

B. I'm famous

C. I'm excited

D. I'm lucky.

题型:单项选择题

请问船舶定线制的主要内容之一是()。

A.分隔反向或接近反向的交通流

B.分隔同向或接近同向的交通流

C.分隔小角度交叉相遇的交通流

D.分隔各转向点附近的交通流

题型:单项选择题

如R-R间距为0.6s,则心率为()

A.100/min

B.60/min

C.120次/min

D.80/min

E.75/min

题型:单项选择题

一般情况下,滑移法吊装塔类设备时,和主吊卷扬机的速度相比,溜尾卷扬机的速度宜().

A、慢

B、快

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