A.锰
B.生物素
C.胆碱
D.钙
第6题
若要测试溶液中的含量,可采用的一种电化学方法为:采用阴极电流将金属铜沉积在某金属基体上,通过记录流过电极上的总电量,可间接求得的含量。请问该方法的理论基础是()
A、Faraday定理
B、Tafel定律
C、Nernst方程
D、B-V方程
第7题
A、Zhuyu is a kind of herb.
B、People usually hang Zhuyu on the door.
C、Zhuyu could eliminate diseases and subjugate disasters.
D、People like wearing Zhuyu on usual days.
第8题
A、Give your apology at the beginning of the letter.
B、State the problem and give explanation for what happened.
C、Arrange for a future action to make up.
D、Apologize again or give thanks for understanding.
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