土木工程施工安全事故,五大伤害除了高处坠落,还有()。
A. 坍塌
B. 物体打击
C. 起重伤害
D. 触电
E. 机械伤害
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土木工程施工安全事故,坍塌事故主要包括()。
A. 模板坍塌
B. 土方坍塌
C. 龙门架坍塌
D. 脚手架坍塌
E. 雨篷板坍塌
[音频]Where are Tom and Janet from?
A. Europe
B. USA
Canada
D. Africa
Where did they go on vacation (for holiday)?
A. Europe
B. USA
Canada
D. Asia
How long were they on vacation?
A. ten days
B. two weeks
C. a month
D. three weeks