装运碳化钙的船发生火灾,为防止火势加剧与扩大,不能用的灭火剂是:
A、二氧化碳
B、干粉
C、卤代烷
D、含水的灭火剂
参考答案:D
N-甲基葡萄糖胺的反应所用试剂
A.费休法B.铂电极C.汞-硫酸亚汞电极D.萘E.青霉素V
It is generally ________ that new industries ________ for the southern part of the country. [ ]
A. agreed; are needed
B. agreed; to be needed
C. agreeing; are needing
D. agreeing; is needed