澄清度检查中的浊度标准贮备液由哪几种试剂制备而成()
A. 硫酸肼
B. 甲醇
C. 丙酮
D. 香草醛
E. 乌洛拖品
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颜色检查中的标准比色贮备液由哪些试剂组成()
A. 硫酸肼
B. 氯化钴
C. 重铬酸钾
D. 高氯酸
E. 硫酸铜
Spring Festival is the most important one for Chinese.
A. 对
B. 错
People make noodle on the 8th day of the twelfth lunar month.
A. 对
B. 错
People usually go abroad to celebrate this festival with their family members.
A. 对
B. 错