就技术而言,连接互联网的方式可分为()3种。
A、通过普通电话拨号上网
B、通过Internet上网
C、通过局域网上网
D、专线接入上网
参考答案:A, B, C
Tina can't see the blackboard because the boy who sits _____ her is very big and tall. [ ]
A. behind
B. in front of
C. next to
D. in the front of
钢网架结构总拼与安装时,中拼单元单跨拼接长度(单元长度<20m)允许偏差为()mm。
A.-10.0
B.+10.0
C.±10.0
D.10.0