（）是税务机关管理发票的法定标志。A、发票代码号码 B、全国统一发票监制章 C、发票

Dear Mr. Johnson,

I’ve learned from a newspaper that some clerks are wanting in your company. I am eager to being one of them. So I am writing the letter. My name is zhang Hua. I was born in the Hebei Province and I am in good health. I’ve just graduated in the Computer Department of Wuhan University. I did very good in all subjects and I am especial good at computer studies and English. I can read science books in English and doing some writing in English as well.

Beside, I know a little French. And in my spare time, I enjoy playing basketball. As is said that your company is very famous and I’ll very glad if you let me work for it. My telephone number is 027-89276628．I am looking forward to hearing from you soon.

一个物体以初速v₀水平抛出，落地时速度为v，则运动时间为[ ]

A．　　　

B．　　　

C．　　　

D．

可保风险应具备的条件中，( )是指风险的发生或风险损害后果的扩展都不是投保人故意行为，是不可预知的。

A．风险应当是纯粹的
B．风险应当是意外的
C．风险应当是客观的
D．风险应当是主观的

监理单位承揽的管理任务的工程范围称( )。

A．监理工作内容

B．监理工作范围

C．监理工作目标

D．监理工作任务

（）是衡量单位时间内力对物体作功多少的物理量。（

A.动能；

B.势能；

C.效率；

D.功率;