问题
不定项选择题
下列描述中,不符合生产实际的是[ ]
A.电解熔融的氧化铝制取金属铝,用铁做阳极
B.电解法精炼粗铜,用纯铜做阴极
C.电解饱和食盐水制烧碱,用涂镍碳钢网做阴极
D.在镀件上电镀铜,用铜做阳极
答案
答案:A
下列描述中,不符合生产实际的是[ ]
A.电解熔融的氧化铝制取金属铝,用铁做阳极
B.电解法精炼粗铜,用纯铜做阴极
C.电解饱和食盐水制烧碱,用涂镍碳钢网做阴极
D.在镀件上电镀铜,用铜做阳极
答案:A
判断下列句子的正确 (T) 与错误 (F)。 | |
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( )1. I can get my ticket refunded if I'm not pleased with my seat. ( )2. Sometimes there are security checks before people enter the theatre. ( )3. It's not allowed to leave my mobile phone on while I am watching the show. ( )4. If I arrive after the show begins, I should hurry to my seat. ( )5. I can take photos in the theatre if I like. |