某办公室夏季用分体空调机调节室内温湿度,其空调过程的热湿比ε为( )。
A.ε<0
B.B=0
C.ε>0
D.ε=100
参考答案:C
(2014·江苏苏州六校联考)The train moved slowly from the station,but________speed as it reached the open country.
A.picked up
B.looked up
C.put up
D.made up
牙周治疗的消除病因阶段不包括
A.消除龈上、下菌斑及牙石
B.纠正食物嵌塞
C.牙周翻瓣术
D.暂时性固定松动牙
E.口腔卫生指导