机械事故发生后,应先(),并迅速报告领导和上级主管部门,进行妥善处理。
A、保留现场
B、迅速抢救受伤人员
C、抢修机械设备
D、处理当事人
参考答案:B
将下列否定陈述句改为肯定陈述句。
1、She doesn't usually go to work on foot.
2、They don't have lessons from Monday to Friday.
3、I'm not going to see my grandparents.
4、Sometimes Lily doesn't do some shopping.
5、You won't get fatter.
6、She didn't come home on time.
7、I didn't see your name in the newspaper yesterday afternoon.
8、She doesn't want to be your penfriend.
9、There aren't any fish in the water.
10、There isn't a nice picture on the blackboard.
11、I can't jump higher than you.
12、You may not come here.
13、You mustn't smoke here.
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