【多选题】生产工艺过程中所产生静电的最大危险是引起爆炸。因此,在爆炸危险环境必须采取严密的防静电措施。下列各项措施中,属于防静电措施的有( )。
【单选题】Eat ___ cake you like and leave the others for __ comes late.
【简答题】Eat _____ cake you like and leave the other for _____ comes in late. A any, who B. every, whoever C. whichever, whoever D. either, whoever
【单选题】Chinese people eat moon cakes on Mid-Autumn Day because _________
A.
the round shape represents family reunion.
B.
the round shape looks like the full moon.
C.
it is a custom handed down from the ancient times.
D.
they are meaningful as sacrifices for the ancestors.
【单选题】–What do people usually eat at Dragon Boat Festival? –___________.
【多选题】生产工艺过程中所产生静电的最大危险是引起爆炸。因此,在爆炸危险环境必须采取严密的防静电措施。下列各项措施中,属于防静电措施的有( )。
【单选题】People eat moon cakes on ______________.
【简答题】工艺过程中所产生的静电有多种危险,必须采取有效的互相结合的技术措施和管理{{施进行预防。下列关于预防静电危险的措施中,错误的做法是( )。A降低工艺速度B.增大相对湿度C.高绝缘体直接接地D.应对抗静电添加剂