问题 单项选择题

有一土方工程须挖土8000m3。现有反铲挖土机,生产率为400m3/台班,工期7d,每天工作两班,时间利用系数K=0.8,完成该项工作需()台反铲挖土机。

A.1

B.2

C.3

D.4

答案

参考答案:B

解析:

阅读理解

阅读理解。

     At times, you need to say thanks for a cool CD, for a favor from a fricnd, or a wonderful party. So it

is polite and kind to write a thank-you note.

     Here arc some tips on how to do it:

     ●Use a pcn,  or a nice card.  A ballpoint is also OK.  But save the excise book paper for

schoolwork.

      Write as if you were talking to the person.  Sometimes, when we're trying to sound polite, we sound

unnatural.  No: I have always wanted to own a toy panda.  Yes: I've always thought toy pandas are cute.

     ●Get it in the mail today.  It's never too late to say thanks, but writing quickly is morc politc.

     Now you know the basic rules, you can start writing a thank-yOu note:

     ●Greeting.  "Dear" is often used. Hi" is also OK.

     * First thank-you. A short sentence that thanks the giver, such as "Thanks for the great birthday gift."

     ●The details.  Describe the gift,  explaining what makes it special.  A few sentences will do.

     * Second thank-you. A sentence that says thanks again.

     * Close and signature. Say "with love", or "with best regards". Then sign your name.

根据短文内容,判断句子正(T))误(F)。

( )1. It's politc and kinci to write a thank-you note when someone does something nicc for you.

(     )2. People use much exercise book paper to write thank-you notes.

(     )3. When wc writc thank-you notes, we should write as if we wcre talking to someone.

( )4. We should write and mail the thank-you notes as soon as possible.

( )5. We can only use short sentences in the thank-you notes.

单项选择题 A型题