如图标志的含义是什么()
A.村庄
B.隧道
C.漫水桥
D.堤坝路
参考答案:D
-- does your new friend look like?
--He is tall with short blonde hair and big blue eyes.
A.How
B.Who
C.What
D.Where
工业上实罐灭菌的时间一般为()
A、20min
B、30min
C、35min
D、40min