下边加粗字的注音正确的一项是[ ] A.炫耀(xiàn)拆掉(chāi) B.执著(

题型:选择题

问题:

下边加粗字的注音正确的一项是                                    
[ ]
A.耀(xiàn)掉(chāi)
B.执(zhù)(cáng)
C.像(diāo) 憬(tóng)
D.造(niè)     淡(àn)
考点:字音
题型:选择题

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入适当的词(不超过三个)或使用括号中词语的正确形式填空。

The Internet has become part of young people’s life. __小题1:___ report shows that 38% of students often use the Internet. Most of them get ___小题2:___ (use) information on the Internet and use the Internet ___小题3:___ (help) in their studies. But many students don’t use it ___小题4:___ a good way. Some play games too much, some visit websites that ___小题5:___ shouldn’t look at. So bad things may happen ___小题6:___ students spend too much time on the Internet.

___小题7:___ is important for students to use the Internet properly. Now we have a textbook, ___小题8:___ uses many examples to teach students some good ways to use ___小题9:__ Internet. It gives useful advice.

Some students also make friends on the Internet. But if you want to have a face-to-face meeting ___小题10:___ your online friends, let your parents know and meet in a proper place.

题型:选择题

A如图所示,质量为2千克的物体,在竖直平面内高h=0.8米的光滑弧形轨道A点,由静止起沿轨道滑下,并进入BC轨道.已知BC段的动摩擦因数µ=0.4,求

(1)物体滑至B点时的速度;

(2)物体最后静止处距B点的距离.

题型:选择题

制动器的空行程不得超过衔铁冲程的()

A.10%

B.15%

C.5%

D.20%

题型:选择题

在数据库管理技术的发展过程中,经历了人工管理阶段、文件系统阶段和数据库系统阶段,其中数据独立性最高的阶段是

A.数据库系统阶段

B.文件系统阶段

C.人工管理阶段

D.数据项管理

题型:选择题

雨雪天进行高处作业时,必须采取可靠的防滑、防寒和防冻措施。

更多题库