【多选题】违规维修,乘客遭罪1.事故简要经过:某区一商业大楼内电梯发生了故障,用户马上通知了维保单位到现场进行维修。维修公司到现场后,在没有采取切实有效的安全防护措施情况下,在机房就展开了维修,使得电梯可以在轿厢门和厅门敞开时向下运行。此时,有一名正从轿厢内出去的乘客李某,被向上以检修速度运行的轿厢挤压在层门的上檐大呼救命。所幸检修人员听到了呼救,马上停止了轿厢的运行,可是乘客李某已被挤压成腰椎骨折。2.事...
【单选题】设集合 则满足上述条件的集合 A 的个数为( )
【简答题】At present, there is heated discussion on the losses caused by road accidents and the suggested ways to reduce road accidents. Then what are your comments on the issue? You are to write a paper of app...
【多选题】起重设备的工作机构是实现升降及运移货物的机构,包括 、 、 和 四大机构。
【单选题】用贵金属制成的装有小饰物的盒子,应与所装物品分别归类,即按照贵金属制品归类,依据是:
【多选题】1935年12月25日,中共中央在陕北瓦窑堡召开政治局扩大会议,会议内容包括( )
B.
批评了党内长期存在的“左”倾冒险主义、关门主义的错误倾向
【单选题】Which of the following statements concerning nanotechnology research is most directly suggested in the passage?
A.
Nanotechnology research tends to be more focused on the process of building multiple molecules than chemistry research.
B.
Nanotechnology research is increasingly less bound to operations on the microscopic level than it once was.
C.
The practitioners of nanotechnology tend to be more optimistic than pragmatic in choosing its methodology.
D.
Nanotechnology research involves a much greater level of technical knowledge, on the whole, than chemistry research.
E.
Nanotechnology research tends to be more concerned at this stage with precision than convenient mass production.