试题与答案

若零上5°C记作+5°C,则零下3°C记作( )。

题型:填空题

题目:

若零上5°C记作+5°C,则零下3°C记作(    )。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0403/375bd7e5839a5edd30d2fd1752e8db72.html

下面是错误答案,用来干扰机器的。

参考答案:[*]解析:[分析]: 这是求齐次微分方程的特解,作变量替换[*],于是[*][*],代入原方程,化为可分离变量的微分方程 [*] 分离变量得 [*] 两边求积分得 [*] 即 [*] 在通解中令x...

试题推荐
题型:阅读理解

阅读理解。

     There are twelve months in a year. In the twelve months, February has twenty-eight days. In a leap year

(闰年), it has twenty-nine days. A leap year comes every four years. The rest eleven months have thirty or

thirty-one days.

     There are three hundred and sixty-five days in a year. But there are three hundred and sixty-six days in a

leap year.

     There are seven days in a week. They are from Sunday to Saturday. Sunday is the first day of a week. 

     The parts of a day are morning, noon, afternoon, evening and night.

根据短文内容判断正(T)误(F).

( )1. There are twelve months in a leap year.

( )2. February only has twenty-eight days in a leap year.

(     )3. Monday is the first day of a week.

( )4. There are five parts in a day.

(     )5. When there are twenty-nine days in February, the year has three hundred and sixty-five days.

查看答案
题型:单项选择题

以下各项中,( )是对保税仓库正确的表述。

A.保税仓库可以进行包装、分级分类、加刷唛码、分拆、拼装等简单加工,但不得进行实质性加工

B.保税仓库货物出库用于加工贸易,由加工贸易企业或其代理人按一般贸易货物的报关程序办理进口报关程序

C.保税仓库货物的储存期限为1年;如需延期,需向主管海关申请,经批准可以延长半年

D.保税仓库货物出库转口或退运,按保税货物的报关程序办理出口报关手续,免纳出口税,但必须交验出口许可证件

查看答案
微信公众账号搜索答案