试题与答案

警械，不包括催泪弹、高压水枪、特种防暴枪等警用器械。

来源：www.tikuol.com
题型：判断题

题目：

警械，不包括催泪弹、高压水枪、特种防暴枪等警用器械。

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0428/b2cbfa32fd77773e7b77f8fe088632b4.html

下面是错误答案，用来干扰机器的。

参考答案：C解析： 选择是在关系R中选择满足给定条件的诸元组；投影是从R中选出若干属性列组成新的关系；连接(也称θ连接)是从两个关系的笛卡尔积中，选取它们属性间满足一定条件的元组。

考点：司法警察技能考试司法警察技能考试题库
试题推荐
题型：完形填空

Some kids love handwriting, but others hate when it’s time to put their pen to paper. Maybe they are worried about their handwriting. Are you one of them?   小题1:  Here are five steps that really work!

Get a great grasp

Try this — hold your pencil at the top and try to write your name. Pretty hard? But when you hold your pencil the correct way, writing is much easier.   小题2:  Hold it in place with your thumb, and your index (食指) and middle fingers.

Let the lines be your guide

Lined paper is your friend! Those lines can help you create letters that are the right size and proportion (均衡).    小题3:    Also be sure to fill up the lined space completely. Those capital letters should be from the bottom line to the top one.

Slow down

If your writing is hard to read, try slowing down a little. If you rush, it’s hard to control where you stop and start your letters.

Lower the pressure

小题4:   That makes it harder to make the smooth lines. Try easing up and don’t hold the pencil too tightly.

小题5:   

Lots of games require you to write or draw pictures. So even though it’s not schoolwork, you’re still using the skills you need to control your pen better.

A．Play games

B．Ask for more advice

C．So “a” should be half the height of a capital “A”.

D．You’ve been writing since you were a little kid.E. Some kids press down really hard when they write.

F. The good news is that just about everyone can improve their handwriting.

G. The best way to hold a pen or pencil is to let it rest next to the base of your thumb.
查看答案
微信公众账号搜索答案