问题
问答题 简答题
《安规》中对卸油、油罐区的防雷接地有何要求?
答案
参考答案:
1、卸油区及油罐区必须有避雷装置和接地装置;
2、油罐接地线与电气设备接线线应分别装设;
3、输油管应有明显的接地点;
4、油管法兰应用金属导体跨接牢固;
5、每年雷雨季节前须认真检查,并测量接地电阻。
《安规》中对卸油、油罐区的防雷接地有何要求?
参考答案:
1、卸油区及油罐区必须有避雷装置和接地装置;
2、油罐接地线与电气设备接线线应分别装设;
3、输油管应有明显的接地点;
4、油管法兰应用金属导体跨接牢固;
5、每年雷雨季节前须认真检查,并测量接地电阻。
C) 根据短文内容,从下面方框中选择适当的单词或短语填空,使短文内容完整正确。
Now, an American company invented a key by using Bluetooth technology 3 help people drive safely. With the key, a driver can’t talk or send messages when driving a car. With Bluetooth technology, when the driver is driving, the phone will 4 all incoming calls and messages by itself with “I am driving now. I will call you later.” The only calls allowed out are to emergency services. When the driver 5 the car, he then can use the phone. This is all about saving lives and safer driving. |