问题 单项选择题

若某缸喷油器咬死而不能开启产生的后果是()。

Ⅰ.该缸熄火

Ⅱ.整机转速降低

Ⅲ.高压油管脉动微弱

Ⅳ.该缸高压油管结头处可能漏油

Ⅴ.排气冒黑烟

Ⅵ.该缸排温下降

A.Ⅰ+Ⅱ+Ⅲ+Ⅴ

B.Ⅰ+Ⅲ+Ⅳ+Ⅴ

C.Ⅰ+Ⅱ+Ⅳ+Ⅵ

D.Ⅱ+Ⅳ+Ⅴ+Ⅵ

答案

参考答案:C

解析:

某缸喷油器针阀因咬死而不能开启,则会造成:

(1)该缸熄火;

(2)整台发动机转速下降;

(3)喷射系统油压剧烈升高,高压油管接头处漏油或破裂;

(4)该缸喷油泵因油压过高而发热;

(5)该缸高压油管发热;

(6)因该缸熄,使排温降低。

改错题

改错(共10小题;每题1分,满分10分)

此题要求你对一段文章改错。先对每一行作出判断是对还是错,如果是对的在该行右边的横线上划一勾(√);如果有错误(每行不会多于一个错误),则按情况改错如下:

此行多一个词:把多余的词用斜线(/)划掉,在该行右边横线上写出该词,并也用斜线(/)划掉。

此行缺一个词:在该缺词处加漏字符号(∧)在该行右边横线上写出该加词。

此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

Dear Ralph,  

I’m a newcomer here of a small town and I need your        66. ____

help now. I would describe myself as a shy and quietly girl.   67. ____

It always seems difficult for me to do things well as                         68. ____

my classmates. I’m sure they will laugh to me and                       69. ____

regard me as a fool. So I feel unhappy every day.                               70. ____

Besides, I have few friends. I don’t know that they                  71. ____

don’t like to talk with me. Sometimes, we talked to each other  72. ____

very well in class, but after class we become stranger at                73. ____

once. I am trying to improve the situation since it doesn’t 74. ____

seem to work. Can you tell me about what I should do?                      75.____

Yours,

Xiao Wei

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