【单选题】I am interested in you have told me .
【单选题】I am interested in animals, so I ______ every Saturday working in an animal hospital. [ ]
【多选题】可用于解救氰化物中毒的特殊解毒 剂是 ( )
【简答题】工业用盐亚硝酸钠是一种有咸味、易溶于水的白色固体,有毒.水溶液呈碱性,亚硝酸钠能将Fe 2+ 转化为Fe 3+ .请回答以下问题: (1)亚硝酸钠(NaNO 2 )所属类别是______; (2)下列方法中,能用来区别NaNO 2 与NaCl固体的是______; A.观察颜色B.品尝味道C.用水溶解D.测试两溶液pH值 (3)人体正常的血红蛋白中含Fe 2+ .若误食亚硝酸钠,就会导致血红蛋白中...
【简答题】I . Fill in the missing words according to the sentences. 1. Excuse me, where is the l _________? I need to borrow some books. 2. I am late for work today because of the t_____ jam. 3. Buses are cheap...
【单选题】下列药物中,可用于亚硝酸盐中毒解救的是( )