铜或()和乙炔长时间接触后,其表面所生成的化合物受到冲击时,就会发生爆炸。A.铝 B 发布时间:2017-07-27 10:35 │ 来源:www.tikuol.com 题型:单项选择题 问题: 铜或()和乙炔长时间接触后,其表面所生成的化合物受到冲击时,就会发生爆炸。A.铝B.银C.铅D.镍
题型:单项选择题 -Dick gave me a note while I __________ in the library.-I guess he made it to say "Sorry" to you.[ ]A. am readingB. was readingC. readsD. will read 查看答案