铸造过程中，液态合金从坩埚到被铸入铸型腔内的时间为
A．1/4～1/3sB．1/2～1sC．1～2sD．3～4sE．4～5s
参考答案：A
含氯的消毒剂用于洗手、餐具消毒以及水果消毒。
It was in the street ______I met xiao zhang_____the fire took place
A.which/which B.that/that C where /that D why/that
