【单选题】After the heavy snow, many students helped to clear away the snow ______ in our school.
【多选题】When the station is closed because of the heavy snow, what should station officers do?
A.
A station officer should broadcast that the station is closed for the heavy snow reason.
B.
A station officer should guide the passenger to the transfer station for another ride.
C.
A station officer should advise the passenger to walk on the non-slip mat and leave the station safely.
D.
A station officer should tell the passengers to leave the station in order and take other transportation patiently.
【单选题】Not until the heavy snow blocked the express ____ how serious the weather was.
A.
the villagers did realize
B.
the villagers realized
C.
did the villagers realize
D.
didn’t the villagers realize
【判断题】综合布线系统的最新国家标准有GB 50311-2016 《综合布线系统工程设计规范》和GB 50312-2016 《综合布线系统工程验收规范》。( )
【单选题】We couldn't see the road clearly the heavy snow.
【判断题】中国现在执行的综合布线系统工程验收国家标准为GB50312-2016《综合布线系统工程验收规范》。