同步发电机对称负载时，气隙磁场是由（）和（）建立的。
参考答案：励磁磁势；电枢磁势
根据句意及首字母提示，补全单词。
1. He is a c_____boy, his English is very good.
2. —What are your favorite a_____?
—Monkeys. They are very cute.
3. —What time is it now?
—It's a q _____past eight.
4. It's 8:00 in the morning now. Let's s_____school.
5. P_____only lives in China.
下列属于负债类账户的是______。
A．管理费用 B．累计折旧 C．预付账款 D．预收账款
