安全阀按作用原理可分为()种。
A、2
B、3
C、4
D、5
参考答案:A
判断下列对话是(T)否(F)正确。
( ) 1. A: Nice to meet you!
B: Nice to meet you, too!
( ) 2. A: What's in the classroom?
B: Many desks.
( ) 3. A: Let's clean our classroom.
B: Good.
( ) 4. A: What's this?
B: It's a book.
( ) 5. A: May I have a look?
B: Sure. Here you are.
消渴病并发中风偏瘫的机理是()
A.燥热内结,营阴被灼,络脉瘀阻,蕴毒而成
B.肾阴亏损,肝失濡养,肝肾精血不足,无以上承
C.阴虚燥热,肺失滋润
D.阴虚热炽,炼液成痰,痰阻经络,蒙蔽心窍
E.阴损及阳,脾肾衰败