题目详情:

[多选题]WIFI信号会在传播过程中遇到障碍物造成衰减，最主主要的衰减方式为（）
A.吸收
B.散射
C.折射
D.反射

参考答案:AD

Outlines:
1) The energy problem is one of the issues that cause wide concern.
2) One of the ways to solve the energy problem is to slow down the drain on our limited resources.
3) The best way to solve the problem is to develop new sources of energy.

参考答案: The Energy Problem
Energy is one of the biggest problems that cause wide concern these days. Many far-sighted scholar and scientists have pointed out that our natural resources are very much limited. If we keep consuming our resources at the present rate, the world will soon be running out of oil, coal and metals and this will certainly lead to a serious energy crisis threatening mankind.
The majority of the world’s population has responded with a clamor for more severe conservation of our natural resources. This is urgently necessary, indeed. It must be realized that much of our energy, in the form of oil, coal, gas, or electricity, has been consumed. If things go on like this, we will leave for wasteland. So, from now on, we will have to make serious and continuous efforts to practice economy in using energy and cut down waste of any form so as to slow down the present drain on our limited resources.
But conservation alone is not all the answer. The best way to solve the energy problem is, I think, to develop new sources of energy. It is obvious that, even if we save much energy by using it carefully, our natural resources, however abundant, will run out eventually. And when they are gone forever, resources can not reproduce themselves. So to find new supplies in unexplored areas seems to be the only way out of our predicament.

第26题:[多选题]在工作间断期间，若有紧急需要，运维人员可在工作票未交回的情况下合闸送电，但应先通知工作负责人，在得到工作班全体人员已经离开工作地点、可以送电的答复后方可执行，并应采取下列（）措施。
A.拆除临时遮栏、接地线和标示牌
B.恢复常设遮栏，换挂“止步，高压危险！”的标示牌
C.应在所有道路派专人守候，以便告诉工作班人员“设备已经合闸送电，不得继续工作”
D.守候人员在工作票未交回以前，不得离开守候地点
E./
F./
参考答案:ABCD

第27题: [单项选择]To be a successful criminal, one must be ______.
A. empirical
B. emigrant
C. elegant
D. elusive
参考答案:D

第28题:[单选题]《道岔保养质量评定标准》规定:标记缺少、不清晰或错误,每处扣( )分。
A.2
B.1
C.4
D.6
参考答案:B

第29题:[多选题]债务人或者第三人有权处分的下列财产可以抵押()：
A.建筑物和其他土地附着物；
B.建设用地使用权；
C.以招标拍卖公开协商等方式取得的荒地等土地承包经营权；
D.生产设备原材料半成品产品；
E.正在建造的建筑物、船舶、航空器；
参考答案:ABCDE

第30题:[填空题]车厢内乘客按压报警，如列车已动车，通过与报警乘客通话，了解信息并安抚乘客（通过司机室CCTV触摸屏的显示观察现场情况），根据信息作具体的处理，并报行调。
参考答案:紧急对讲

第31题:[判断题]工作许可人和工作负责人共同到现场验收，检查设备状况，有无遗留物件，是否清洁等，然后在工作票上填写工作结束时间，双方签名，工作方告终结。
A.正确
B.错误
参考答案:A

第32题: [多项选择]支气管扩张常见的临床表现有（）。
A. 慢性咳嗽、咳痰、反复感染
B. 间断咯血
C. 气促
D. 胸痛
E. 消瘦、贫血
参考答案:A, B

第33题:[单选题]所列材料中导电性最好的是( )。
A. 铝
B.银
C.铜
D. 铁
参考答案:B

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[多选题]WIFI信号会在传播过程中遇到障碍物造成衰减，最主主要的衰减方式为（）A.吸收B.散射C.折射 D.反射

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[多选题]WIFI信号会在传播过程中遇到障碍物造成衰减，最主主要的衰减方式为（）
A.吸收
B.散射
C.折射
D.反射