问题
单项选择题
试验电源应按电源类别、相别、电压等级合理布置，并在明显位置设立安全标志。试验场所应有良好的（），试验台上及台前应根据要求铺设橡胶绝缘垫。
A.接地线
B.作业环境
C.通风设施
D.防护措施
答案
参考答案：A
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试验电源应按电源类别、相别、电压等级合理布置，并在明显位置设立安全标志。试验场所应有良好的（），试验台上及台前应根据要求铺设橡胶绝缘垫。
A.接地线
B.作业环境
C.通风设施
D.防护措施
参考答案：A
| 阅读下面短文，请根据题目要求，从短文内容中获取必要的信息，填在标号为1-5的空格中。 | |||||||||||||||
| Different countries and people have different manners. Here are some examples. If you visit a Chinese family. You should knock at the door first. When the door opens, you should not move before the host says "Come in, please." Before coming into the house in Japan, it is good manners to take off your shoes. In European countries, even if your shoes are very dirty, this is not done. In Britain, a guest always finishes the drink or the food to show that he enjoys it. This will make the host very pleased. | |||||||||||||||
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