一个直角三角形的两条直角边长分别为6cm、8cm,则它的内切圆的半径为cm.

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问题:

一个直角三角形的两条直角边长分别为6cm、8cm,则它的内切圆的半径为      cm.

考点:圆的认识正多边形和圆(内角,外角,中心角,边心距,边长,周长,面积的计算)弧长的计算扇形面积的计算
题型:填空题

国标规定,双硫腙比色法测定食品中铅,样品经灰化处理后,用于溶解灰分的是()

A.硫酸

B.硝酸(1+1)溶液

C.盐酸

D.磷酸

E.盐酸(1+2)溶液

题型:填空题

This was one of my experiences (1) . When I was in my 30s, I was working for a large international company which had its head office in London. I was working in the (2) department.

The company had a training centre which was just outside London. Different courses were held there throughout (3) and I (4) go on one training course a year. These usually started (5) a Sunday evening and lasted six days.

Once I was (6) a week’s training course with about forty (7) sales people. I was in the bar on the Friday evening and suddenly a woman who was (8) behind the bar asked mea curious question. "I hope you don’t (9) my asking," she said, "but I’ve been (10) about it all week. Have you got a sister (11) Mary" The woman’s name was June. And she used to do various jobs at the training centre. She worked in the office, she organized all the food and drink for the centre and she worked in the bar at lunchtime and in the evening.

My answer (12) June’s question was "Yes", and June said, "I thought (13) . I met her last September when she was organizing a course here. " At that time, my sister was working for (14) company but in a different part of the country. That was (15) she came to be at the training centre.

(16) surprised me was how June guessed we were brother and sister. Three things made it even more (17) . First, she had met my sister six months before she met me. Second, they have about sixty new people every week at the training centre. So about one thousand five hundred people had (18) the centre in those six months. And (19) , my sister is married, so she doesn’t have the same family name as me.

We’re not (20) , but I guess we must look quite like each other.

3().

A.the year

B.the month

C.the week

D.the day

题型:填空题

较早提出依法治国的西方思想家是( )。

A.卢梭

B.孟德斯鸠

C.洛克

D.康德

题型:填空题

命令统一是企业组织结构设计的基本原则之一,它是指( )。

A.下级机构只能接受一个上级机构的命令和指挥

B.下级机构一般情况下可以接受最高级机构的命令和指挥

C.下级机构在任何情况下都不得越级接受命令和指挥

D.下级机构在必要时才可以接受多个上级机构的命令和指挥

题型:填空题

画出油分离器的图形符号。

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