The main idea of the text is that______.
A. accents are unfortunately often used to reinforce preexisting linguistic stereotypes
B. accents are used to identify the social background of a speaker
C. accents are generally used to form. negative opinions of the speaker
D. we must stop discriminating against people due to accent
查看答案
洞口作业的防护措施,主要有设置()。
A . 封口盖板
B . 防护栏杆
C . 安全网
E . 栅门
脚手架的检查与验收应由项目经理组织,项目施工、技术、安全、作业班组负责人等有关人员参加,按照技术规范、施工方案、技术交底等有关技术文件,对脚手架进行分段验收,在确认符合要求后,方可投入使用。()