用10%甲醛溶液浸泡器械的时间为()
A.5min
B.10min
C.15min
D.20min
E.30min
参考答案:E
—— do you eat vegetables?
——Every day.
A.How long
B.How often
C.How much
D.how far
()也叫企业补充养老保险。
A.企业年金
B.住房公积金
C.团体人寿保险
D.带薪休假