美英联军攻打伊拉克时,曾有消息传,叙利亚向伊拉克运送红外夜视仪,夜视仪是一种可以

题型:选择题

问题:

美英联军攻打伊拉克时,曾有消息传,叙利亚向伊拉克运送红外夜视仪,夜视仪是一种可以在夜晚达到侦察目的设备,其依据的原理是(  )

A.不同的物质结构不同

B.不同的物质发出的色光不同

C.它能在夜间发出红外线并到达不同的物体上

D.不同的物体温度不同,所辐射的红外线的强度也不同

考点:红外线
题型:选择题

阅读理解。

Dear Sir,   

    I'm writing to complain about the service offered by your company.   

    I told your service department on November 21 that my washing machine needed repairing, Your service

engineers have since been here four times-on December 1l, December 19, December 25 and January 5. The

problem was found out on the first visit and the wrong parts were brought by different engineers on the two

next visits. The correct part was fitted by the first engineer on the fourth visit.   

    In short, my complaints are:   

    a. I had to wait three weeks for an engineer to call and nearly two months for the machine to be repaired.   

    b. The engineers who called on December 19 and December 25 had been given wrong information by the

company, which made me take two half days off unnecessarily.   

    c. The first and fourth visits lasted a total of thirty minutes. But in the invoice (发票), I have to pay for four

visits of four hours' work. I will not be paying the invoice for their mistakes and I do hope to receive your

answers to these complaints.   

                                                                                                                                       Yours,   

                                                                                                                                      Robert White

1. Robert's main purpose in writing to the company is to tell the company _____. [ ]

A. how its service department is operating   

B. how its different engineers came for the repair   

C. that two of the engineers didn't give him any help  

D. that he refuses to pay the company for their mistakes

2. The first of Robert's complaints is that _____.[ ]

A. it took him three weeks to have the machine repaired   

B. it took him nearly sixty days to get his machine repaired   

C. it had been almost two months before the first engineer came   

D. it took the engineer 3 weeks to find out something wrong with the machine.

3. The second and third engineers brought the wrong parts because _____. [ ]

A. the company didn't tell them exactly what they should do   

B. the company didn't tell them where the correct parts were   

C. they were not sure about whether the machine worked or not   

D. they hadn't been told where the right parts should be fitted.

4. It can be inferred from the letter that Robert promises to pay for _____. [ ]

A. there hours' work        

B. half an hour's work   

C. an hour's work         

D. four hours' work

题型:选择题

脊髓灰质炎的传染源为()和()。

题型:选择题

从本表它页取数应该用下面哪个命令()。

A.let

B.select

C.relation

D.from

题型:选择题

办税服务厅发生排队拥堵时,()应及时做好现场秩序的维护和拥堵原因识别。

A.值班领导

B.导税员

C.纳税服务科负责人

D.首位接洽的税务工作人员

题型:选择题

在PPP项目移交前,通常需要对项目的资产状况进行评估并对项目状况能否达到合同约定的移交条件和标准进行测试。实践中,上述评估和测试工作通常由()负责。

A.政府方委托的独立专家

B.由政府方和项目公司共同组成的移交工作组

C.政府方

D.项目公司

E.股东/投资者

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