A：is
B：are
下列关于人体稳态与调节的叙述正确的是
⑴When do you eat breakfast?____ A.It's warm and sunny.
⑵Can you make a snowman now?____ B.No,it isn't.
⑶What's the weather like today?____ C.I eat breakfast at 7: 15.
⑷What would you like to do?____ D.No,I can't.
⑸Is it windy and cold?____ E.I would like to go swimming.
①若输入的控制电流由a流入，由b流出，则铁芯2中A端为N极，B端为S极
②若输入的控制电流由a流入，由b流出，则铁芯2中A端为S极，B端为N极
③若a、b处输入交变电流，铁芯2不能被吸入线圈中
④若a、b处输入交变电流，铁芯2仍能被吸入线圈中
⑴When do you eat breakfast?
A.It's warm and sunny.
⑵Can you make a snowman now?
B.No,it isn't.
⑶What's the weather like today?
C.I eat breakfast at 7: 15.
⑷What would you like to do?
D.No,I can't.
⑸Is it windy and cold?
E.I would like to go swimming.