[单选题]对难以做到与电源完全断开的检修线路、设备，可（）其与电源之间的电气连接。
A.断开
B.拆除
C.隔离
D.拉开

[单项选择]最近，在100万年前的河姆渡氏族公社遗址发现了烧焦的羚羊骨残片，这证明人类在很早的时候就掌握了取火煮食肉类的方法。
上述推论中隐含着下列哪项假设( )
A. 从河姆渡公社以来的所有人都掌握了取火的技术。
B. 河姆渡人不生食羚羊肉。
C. 只要发现烧焦的羚羊骨就能证明早期人类曾聚居于此。
D. 河姆渡人以羚羊肉为主食。
E. 羚羊骨是被人类取火烧焦的。

[单选题]作业人员进行换相工作转移前，应得到（ ）的同意。
A.工作负责人
B.工作许可人
C.调度
D.监护人

[填空题]对易燃、易爆和有毒的材料，应有专人负责， ，妥善保管。

[多选题] 下列属于过失犯罪的有()
A. 放火罪
B. 玩忽职守罪
C. 失火罪
D. 交通肇事罪

[单选题]根据《刮板输送机的减速器齿轮完好标准》规定：齿轮磨损不超过原齿厚的20%，打齿不超过齿宽的（ ）。
A.0.3
B.0.1
C.0.2
D.0.4

[单项选择]To get a chocolate out of a box requires a considerable amount of unpacking: The box has to be taken out of the paper bag in which it arrived, the cellophane wrapper has to be torn off, the lid opened and the paper removed, the chocolate itself then has to be unwrapped from its own piece of paper. But this overuse of wrapping is not confined to luxuries. It is now becoming increasingly difficult to buy anything that is not done up in beautiful wrapping.
The package itself is of no interest to the shopper, who usually throws it away immediately. Useless wrapping accounts for much of the refuse put out by the average London household each week. So why is it done Some of it, like the cellophane on meat, is necessary, but most of the rest is simply competitive selling. This is absurd. Packaging is using up scarce energy and resources and messing up the environment.
Recycling is already happening with milk bottles which are returned to the dairies, washed out, and refilled. B
A. enough research has been done into recycling
B. people will soon stop using packaging altogether
C. packing is actually useless and could be ignored
D. it is better to produce new materials than to re-use old ones

[单项选择]甲状旁腺腺癌（）。
A. 产生甲状旁腺素
B. 产生去甲肾上腺素和肾上腺素
C. 产生降钙素
D. 产生肾上腺皮质激素
E. 产生胃泌素

[单项选择]College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and (71) millions of dollars each year to sports. Most universities earn millions (72) as well, in television revenues and sponsorships. They also benefit (73) from the added publicity they get via their teams. Big-name universities (74) each other in the most popular sports. Football games at the university of Michigan regularly (75) crowds of over 90,000. Basketball’s national collegiate championship game is a TV (76) on a par with (与……相同或相似) any other sporting event in the United States, (77) perhaps the Super Bowl itself. At any given time during fall or winter one can (78) one’s TV set and see the top athletic programs—from schools like Michigan, UCLA, Duke and Stanford— (79) in front of packed houses and national TV audiences.
The athletes themselves are (80) A. draw
B. amuse
C. govern
D. handle