结合实际，叙述公司生产中应采取哪些措施来防止污染与交叉污染?
查看答案
__ anything about the accident, he went to work as usual.
A. Don't know
B. Not to know
C. Not knowing
D. Not to be knowing
He had his leg __ in the match yesterday.
A. to break
B. broken
C. break
D. breaking
Most of the people __ to the party are scientists.
A. invited
B. to invite
C. being invited
D. inviting
- Good morning, can I help you?- I'd like to have this package __.
A. be weighed
B. being weighed
C. to weigh
D. weighed
微信支付 
支付宝支付