[判断题]辅助逆变器装置中直流电容与滤波电抗器协同工作，具有减低向网线流去的高频波功能和确保离线时无停电时间的功能。
A.正确
B.错误

Have you ever asked yourself why children go to school You will probably say that they go to learn their own language and other languages, arithmetic, history, science and (76) subjects. That is quite true; but why do they learn these things And are these things (77) that they learn at school
We send our children to school to (78) for the time when they will be big and will have to work (79) themselves. Nearly all they study at school has some practical use in their life, but is that the only reason (80) they go to school
There is (81) in education than just learning facts. We go to school (82) all to learn how to learn, so that when we have left school we can continue to learn. A man who really knows how to learn will always be successful, because (83) he has to do something new which he has never had to do before, he will rapidly teach himself how to do it in the best way. The uneducated per
A. why
B. which
C. because
D. what

When Dr. John W.Gofman, professor of medical physics at the University of California and a leading nuclear critic, speaks of "ecocide" in his adversary view of nuclear technology, he means the following: A large nuclear plant like that in Kalkar, the Netherlands, would produce about 200 pounds of plutonium each year. One pound, released into the atmosphere, could cause 9 billion cases of lung cancer. This waste product must be stored for 500,000 years before it is of no further danger to man. In the anticipated reactor economy, it is estimated that there will be 10,000 tons of this material in Western Europe, of which one table-spoonful of plutonium-239 represents the official maximum permissible body burden for 200,000 people. Rather than being biodegradable, plutonium destroys biological properties.
In 1972 the U.S. Occupational Safety and Health Administration ruled that the asbestos level in the work place should be lowered to 2 fibers per cubic centimeter o
A. waste utilization
B. ecological balance
C. radioactive reaction
D. massive bio-destruction