问题
单项选择题
500型指针式万用表的结构主要包括（）、线圈、指针和转动轴承等。
A.信号发生器
B.手摇发电机
C.磁路系统
D.光电耦合器件
答案
参考答案：C
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500型指针式万用表的结构主要包括（）、线圈、指针和转动轴承等。
A.信号发生器
B.手摇发电机
C.磁路系统
D.光电耦合器件
参考答案：C
| Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap. For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century. there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crashing the tablets in milk or orange juice. |
Which of the following statements is NOT true
A．Aspirin can relieve pain.
B．Aspirin can reduce fever.
C．Aspirin can relieve inflammation.
D．Aspirin can reduce stomach lining.