— Have some chicken.
— _______________[ ]
A. Thank you.
B. Here you are.
答案:A
呆小病是幼年时生长激素分泌不足。
通讯机房和电子计算机房等防护区,七氟丙烷的灭火设计浓度宜采用()
A.5%
B.6%
C.7%
D.8%