下列现象中,为了增大压强的是() A.骆驼长着宽大的脚掌 B.载重汽车装有许多轮

题型:选择题

问题:

下列现象中,为了增大压强的是(    )

A.骆驼长着宽大的脚掌

B.载重汽车装有许多轮子

C.坦克车装有宽宽的履带

D.压路机装有质量很大的碾子

考点:压强的定义
题型:选择题

—______ your brother ______ a basketball?

—Yes, he does.

A.Is; have

B.Do; have

C.Does; has

D.Does; have

题型:选择题

Spyware and other forms of malware are the biggest online threat to your computer's () nowadays. These malicious () which get to your PC through freeware, shareware, commercial sites, deceptive pop-ups or in any other way, can record your surfing habits and sites you visit, share your personal information with their partners. Any personal (), when in wrong hands, can leave you a victim of an "identity theft" by steeling your credit ()details, birth records and other () information.

can leave you a victim of an "identity theft" by steeling your credit ()details.

A. reputation

B. password

C. address

D. card

题型:选择题

幼儿可以独自走稳()

A.8~9个月

B.24个月

C.6~7个月

D.15个月

E.3~4个月

题型:选择题

()服务可以使用户进行存储在其它计算机上的程序。

A.BBS

B.TCP/IP

C.Telnet

D.FTP

题型:选择题

在龙门刨床上一般采用压板、螺栓把工件直接紧固在()上。

A.工作台

B.机用台钳

C.角铁

D.分度头

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