热门试卷

消防用电设备的配电线路应穿管保护。当暗敷时应敷设在非燃烧体结构内，其保护层厚度不应小于( )，明敷时必须穿金属管，并采取防火保护措施。采用绝缘和护套为非延燃性材料的电缆时，可不采取穿金属管保护，但应敷设在电缆井沟内。

A．10mm
B．20mm
C．30mm
D．50mm

The generation of Americans being talked about refers to those people ______.


A．who are the first of this century to mature
B．who could meet the stiffest of challenges
C．who have matured in peace and prosperity
D．who remember the assassinations of Robert Kennedy and Martin Luther King, Jr

What is Not true of the generation of America in question


A．They were born from 1957 - 1971.
B．The generation consists of 60.3 million Americans.
C．The generation accounts for 25 percent of the American population.
D．The generation has experienced challenges and domestic chaos.

The author writes the passage to tell the reader that ______.


A．the lack of adversity is a disadvantage
B．he envies the generation
C．America has now enjoyed peace and prosperity
D．the generation can join together and meet challenges

不属于建设工程项目常用的估算法是( )。

A．生产能力指数法
B．资金周转率法
C．比例估算法
D．系数估算法

柴油发电机房内应设置储油间，其总储存量不应超过( )的需要量，储油间应采用防火墙与发电机间隔开；当必须在防火墙上开门时，应设置能自行关闭的甲级防火门。

A．6h
B．8h
C．12h
D．24h

建筑高度不超过100m的高层建筑，其电缆井、管道井应( )在楼板处用相当于楼板耐火极限的不燃烧体作防火分隔。

A．每层
B．每隔1～2层
C．每隔2～3层
D．每隔3～4层

建筑高度超过100m的高层建筑，除面积小于( )的厕所、卫生间外，均应设火灾自动报警系统。

A．3.0m2
B．5.0m2
C．8.0m2
D．10.0m2

建筑高度超过100m的高层建筑，应在( )楼板处用相当于楼板耐火极限的不燃烧体作防火分隔。电缆井、管道井与房间、走道等相连通的孔洞，其空隙应采用不燃烧材料填塞密实。

A．每层
B．每隔1～2层
C．每隔2～3层
D．每隔3～4层