Some students at the Open University left school 20 years ago. (36) are younger but all must be at least 21 years old. This is one example of (37) the Open University is different (38) all the others. Its students must (39) work fulltime or be at home all day. They do not have to (40) any examinations before they are (41) . This is why the university is called "open". It was started (42) order to help people who (43) having a university education when they were young. The first name (44) the open university was "the University of the Air". The idea was to teach (45) the air, in other (46) , on radios and the television. (47) of the teaching is done like this. The student also receives (48) at one of 283 study centers in the country. He must also (49) three weeks every summer as a (50) student. Tutors and students (51) and study together, (52) <
A. pay
B. spare
C. take
D. spend
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Awarded the Nobel Prize for physics in 1918, German physicist Max Planck is best remembered as the originator of the quantum theory. His work helped usher in a new era in theoretical physics and revolutionized the scientific community’s understanding of atomic and subatomic processes. Planck introduced an idea that led to the quantum theory, which became the foundation of twentieth century physics. In December 1900, Planck worked out an equation that described the distribution of radiation accurately over the range of low to high frequencies. He had developed a theory which depended on a model of matter that seemed very strange at the time. The model required the emission of electromagnetic radiation in small chunks or particles. These particles were later called quantums. The energy associated with each quantum is measured by multiplying the freque A. a model of matter B. emission of electromagnetic radiation C. quantums D. the equation that described the distribution of radiation accurately over the range of low to high frequencies [简答题]教学过程的规律
[多选题]李静是某作业区的采油工，一天当她上站换班时，耽误了送班车，于是她到路边等便车。不一会，本井区的值班车庆铃皮卡开了过来，她便招手。车停下来后，井区长从车上下来问：“李静，是不是又把车误了？”，李静说“嗯，张队长你的车上还有没有座位？”，张队长说：“没有了，现在连司机已经坐了6个人，你租一辆出租车上站吧。”李静说：“行，那你们先走吧”，于是张队长上车先走了。不一会，李静便租到了一辆出租车，出租车超过行驶道路限行时速飞快的向站上驶去。请问，他们的（）行为违反了油田的交通安全管理规定。
A.张队长违章指挥 B.井区值班车超载 C.李静在油区内搭乘非油田内部车辆 D.出租车超速行驶 [单选题]( )升降时,应设专人对脚手架作业区域进行监护。
A.电梯 B.附着式升降脚手架和其他外挂式脚手架 C.吊篮 [简答题]低压带电作业应设专人监护使用有绝缘柄的工具
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