【单选题】【消耗次数:1】
防护栏杆未用安全立网封闭时,必须在栏杆下边设置严密固定的高度不低于()的挡脚板
A10cm
B15cm
C18cm
D20cm
参考答案:
复制
纠错
相关题目
【单选题】 防护栏杆必须自上而下用安全立网封闭,或在栏杆下边设置严密固定的高度不低于( )的挡脚板或40cm的挡脚笆。
①  14cm
②  16cm
③  18cm
④  20cm
【单选题】 边长大于( )cm的洞口,四周设置防护栏杆并围密目式安全网,洞口下张挂安全平网。
①  150
②  200
③  250
④  300
【多选题】 开挖深度超过2m的基坑周边必须安装防护栏杆。防护栏杆应牢固可靠并符合下列规定( )。
①  防护栏杆高度不应低于1.2m
②  横杆应设2道~3道,下杆离地高度宜为0.3m~0.6m ,上杆离地高度宜为1.2m~1.5m
③  立杆间距不宜大于1.8m,立杆离坡边距离宜大于0.5m
④  防护栏杆宜加挂自上而下封闭设置的密目安全网
⑤  挡脚板高度不应小于180mm,挡脚板下沿离地高度不应大于20mm
【单选题】 当在基坑四周固定防护栏杆时,栏杆柱可采用钢管并打入地面( )。
①  40-60cm
②  45-65cm
③  50-70cm
④  55-75cm
【多选题】 在下列哪些部位进行高处作业必须设置防护栏杆?( );
①  基坑周边
②  雨篷边
③  挑檐边
④  无外脚手的屋面与楼层周边
⑤  料台与挑平台周边
【单选题】 垂直运输接料平台,除两侧设防护栏杆外,平台口还应设置( )或活动防护栏杆。
①  安全围栏
②  安全门
③  安全立网
④  竹笆
【单选题】 电梯笼周围( )m范围,应设置防护栏杆。
①  1
②  1.5
③  2
④  2.5
【单选题】 边长为( )洞口,必须设置四周搭设维护架,并双道防护栏杆,洞口挂安全平网。
①  150~150cm
②  150~130cm
③  140~130cm
④  140~150cm
【判断题】 开挖深度超过3m及以上的基坑周边必须安装防护栏杆,防护栏杆的安装应符合规范要求
①  正确
②  错误
【单选题】 施工电梯梯笼周围()范围,应设置防护栏杆。
①  1.8m
②  2.0m
③  2.5m
④  3.0m
随机题目
【单选题】 Use daily writing to ______ your communication skills.
①  track
②  discharge
③  contract
④  enhance
【单选题】 The dean of the Philosophy Department requested that the visiting scholar ______ a lecture on the philosopher Sartre.
①  gave
②  give
③  would give
④  had given
【单选题】 It became harder for women married to diplomats(外交家) to _______ their own interests.
①  pursue
②  replace
③  absorb
④  convince
【单选题】 As a result of his hard work, he has gained ______ to the Beijing University.
①  access
②  commitment
③  opportunity
④  reward
【单选题】 Planning so far ahead _____ no sense -- so many things will have changed by next year.
①  made
②  is making
③  makes
④  has made
【单选题】 How can you keep the machine ()when you are away?
①  run
②  to run
③  running
④  being run
【单选题】 I hate people who ____ the end of a film that you haven’t seen before.
①  reveal
②  rewrite
③  revise
④  reverse
【单选题】 Since the matter was extremely _____, we dealt with it immediately.
①  tough
②  tense
③  urgent
④  instant
【单选题】 As to who is to be hired, it is the Human Resources Department()has the final say.
①  whose
②  those
③  these
④  that
【单选题】 Twenty people were _______ wounded in the air crash.
①  quickly
②  wrongly
③  bitterly
④  seriously