属于固定黏膜的是
A.唇颊黏膜 B.牙槽嵴黏膜 C.移形皱襞区黏膜 D.口腔黏膜 E.破溃黏膜
参考答案:B
—We really enjoy ourselves at the party.Thanks again,Mr.and Mrs.White.
—___________.Just drop in whenever you feel like it.
A.With pleasure
B.Our great honor
C.Nice having you here
D.Nice you are here
新氢压缩机开机前启动盘车器盘车()分钟。
A、5
B、10
C、20