接地装置是接地体和接地线的总和,它的作用是把引下线引下的雷电流迅速散到大地土壤中去。
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A: Hi, Lucy! How’s it (1)________?B: Fine, thanks. And you?A: Just fine. Where are you (2)________ to?B: To the library. I’m going to have a history examnext week and need to start studying.A: Well, I’ll see you later then. (3)__________!B: Thanks. See you later.
A: Hey, Frank! How did your physics exam go?B: (1)________, thanks, Linda. I’m just glad it’s (2)________!How about you? How did your presentation go?A: Oh, it went really well. Thanks for helping mewith it!B: You’re welcome. So do you (3)__________ studyingfor our math exam tomorrow?A: Yeah, sure! Come over around 10:00, afterbreakfast.B: All right. I’ll bring my (4)___________.
A: Hey, Henry! What are you doing?B: I have been trying to solve this math problem for the last half hour, and I still (1)_____________ how to do it.A: When do you have to turn it in?B: It is (2)________ at the end of this week.A: Well, it is only Monday. Why don’t you get some (3)________ from Professor White tomorrow?B: OK, I will do that. Thanks for your suggestion.