【多选题】关于电力电缆,下列说法正确的是()。
A.
电缆夹层、电缆竖井、电缆沟敷设的非阻燃电缆应包绕防火包带或涂防火涂料,涂刷应覆盖阻火墙两侧不小于1m范围
C.
电缆沟每隔一定的距离(50米)应采取防火隔离措施
D.
电缆金属支架应接地良好,并进行防腐处理,交流系统的单芯电缆或分相后的分相电缆的固定夹具应采用非铁磁性材料
【单选题】下列关于消防救援口和专用消防口的说法中,正确的是()。
A.
消防救援窗口的净高度和净宽度分别不小于1m*0.8m
C.
消防救援口沿建筑外墙在每层设置,设置间距不大于20m,且每个防火分区不少于2个
D.
洁净厂房外墙上开设的专用消防口,其宽度和高度分别不小于0.75m*1m
【单选题】听力原文:(A) They're washing their cars. (B) They're watering the garden. (C) They're cleaning the parking lot. (D) They're parking their vehicles.
【简答题】AutoCAD2004 的启动方式有几种 ?
【单选题】听力原文:(A) They're rubbing their fingers. (B) They're stretching their legs. (C) They're leading a band. (D) They're shaking hands.
【单选题】汽车左转弯时,如果转向过度,ESP 系统在( )上施加制动力,使汽车回归到预定路线上
【单选题】听力原文:(A) They're looking at the paintings. (B) They're painting a picture. (C) They're having their picture taken. (D) They're taking a picture.