若一螺栓标记88,则第一个数字表示的是() A.屈强比 B.最大抗张应力 C.屈服强

题型:单项选择题

问题:

若一螺栓标记88,则第一个数字表示的是()

A.屈强比

B.最大抗张应力

C.屈服强度

考点:发动机装调工工艺工艺题库
题型:单项选择题

小明家买了一台电烤箱,有低、中、高三个档位的发热功率.

如图是其内部简化电路图,开关S1可分别与触点a、b接触. 已知:R1=48.4Ω,R2=96.8Ω,电源电压保持不变.请分析和解答以下问题:

(1)当开关S1,置于b端、S2断开时,电烤箱处于什么档位?简述理由

(2)电烤箱在中档位工作时,消耗的电功率是多少?

(3)电烤箱在高档位工作时,对食物加热6min,消耗的电能为多少?

题型:单项选择题

An epidemic (流行病) of the use of street-culture language broke out in some English exams, according to examiners.

A report said there were “a surprising number of small mistakes” in standard (标准) English. It asked teachers that they should prevent pupils from using "street language and text style", adding, “Most answers require formal expression of language.”

“Many concerns were expressed by examiners about basic errors, often appearing in the work of clearly able students,” the report continued.

It added that the use of street and text language “appeared with surprisingly regularity in the work of students who clearly desired a higher grade”.

“Most answers require formal expression but even when an informal style is appropriate--students should know the examination context and, in particular, should not use street language and text style.” it said.

There is rising concern about pupils’ writing skills, especially among boys. National test results for 11-year-old boys’ writing standards had fallen this year. Only 55 percent reached the level expected of an 1l-year-old by the time they left primary school, the results showed.

Many educationalists are now arguing that teachers should also think of ways of improving writing standards.

The report said spelling was “in general inconsistent(不一致)” and “variety of vocabulary and of sentence structure is often limited”. It went on, “Punctuation (标点符号) errors continue to be widespread.”

However, it added, “Some examiners felt that this year they had met an improvement in the whole structure of students' writing.”

64. What does the passage mainly talk about?

A. Street language is appearing in the standard English exams.

B. What the street-culture language is in England.

C. The English say no to the street-culture language in daily life.

D. The street-culture language is being examined in English exams.

65. The underlined word “appropriate” (in Paragraph 5) means “ _______”                                                            

A. available             B. possible             C. valuable                   D. acceptable               

66. What problems concerned examiners ?                   

A. Small mistakes in spelling and punctuation,         

B. Poor sentence structure, and errors in spelling and standard English.                               

C. Teachers teaching writing skills.

D. Limited vocabulary of boy pupils.

67. According to the passage, which of the following statements is TRUE?

A. In English exams, most answers require informal expression of language.                      

B. When an informal style is correct, the students are allowed to use it.                            

C. Boys' writing skills are worse than those of girls in England.

D. There is no improvement in the whole structure of students' writing.

题型:单项选择题

由于业主原因,导致工程暂停2个月,则承包商可索赔()。

A.利润

B.人工窝工费

C.机械设备窝工费

D.增加利息的支出

E.增加的履约保函手续费

题型:单项选择题

审核员在销售部查看上季度产品销售统计分析报表,看到有许多顾客要求退、换货的记录,退换数量占了全部销售产品的21%,报表中写明的原因分析是运输不当造成产品外壳破损。审核员问:“对这种情况是如何处理的?”销售部长说:“这不是我们的责任,发货时产品的外壳都是好的,产品都是合格的,这些问题都是由于火车和汽车野蛮运输造成的,我们也没有办法,只能退换或修理。”

题型:单项选择题

套管的预防性试验要求在()或大修后或必要时进行

A.每半年

B.每年

C.1~3年

D.3~5年

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