下列有关物质的性质及应用均正确的是( ) A.常温下浓硫酸能使铝发生钝化,可在常温下用铝制容器贮藏贮运浓硫酸 B.氢氧化铁胶体具有很强的吸附性,可用于除去水中的所有杂质 C.二氧化氯具有还原性,可用于自来水的杀菌消毒 D.铜的金属活泼性比铁的差,可在海轮外壳上装若干铜块以减缓其腐蚀同义句转换1. No matter how many difficulties we may meet with,we should try to deal with them.many difficulties we may meet with,we should try to deal with them.