脚手架搭设人员必须是经过按现行国家标准《特种作业人员安全技术考核管理规则》(GB、5036)考核合格的专业架子工。上岗人员可不必进行定期体检。()
参考答案:错
采用简单的网络设备,实现数百米距离内不同计算机之间数据通讯,资源共享的技术,一般称为( )。
A.广域网
B.局域网
C.因特网
D.互联网
My pen pal from America is coming to visit me. I'm thinking about _____. [ ]
A. what present did give her
B. how I will give her a surprise
C. where will we have a big meal
D. whether I planned a trip for her