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【简答题】
酒糟中淀粉含量的测定中,通过标定得到碱性酒石酸铜甲、乙液10ml相当于葡萄糖的质量为0.25mg;然后对5.00g样品经过水解处理后的样液定溶到250mL,然后取过滤样液进行测定:取碱性酒石酸铜甲、乙液10ml,加入比预测体积少1ml的样品溶液,趁沸腾以1d/s的速度用样液进行滴定至褪色,两次平行分别消耗样品的体积为:8.35mL,8.60mL。请计算该样品中淀粉的含量(g/100g)。
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【简答题】医疗期是指企业职工因工负伤停止工作，治病休息的期限。(判断题)如果错误，请尽量说明错误之处，谢谢！
【单选题】I like the clothes in the shop very much. They look so cool and they are much ______ than the ones in other shops. [ ]
A.
more cheaper
B.
more expensive
C.
cheaper
D.
expensive
【简答题】Complete the dialogue with the following sentences.用下列A、B、C、D四个句子填空 A. Have you ever been to Guilin? B. What's Hong Kong like? Is it an interesting place? C. What’s Seattle like? I’ve never been th...
【单选题】In the University of Wisconsin-Madison, what's the graduation rate of its blacks in 2007?
A.
81%.
B.
56%.
C.
15%.
D.
25%.
【单选题】根据《企业职工患病或非因工负伤医疗期规定》，医疗期是指企业职工因患病或非因工负伤停止工作治病休息不得解除()的时限。
A.
劳动关系
B.
劳动合同
C.
工作合同
D.
雇佣关系
【单选题】What is Parker's attitude to university in the future?
A.
Virtual global education system will replace university in the future.
B.
University will continue to play a key role in the future.
C.
Residential campus will be integrated into the virtual educational system.
D.
Universities should open their doors to every member in a society.
【简答题】如图为探究酸奶的制作条件的实验过程图，请据图回答： (1)实验中设置实验乙的目的是______________。 (2)实验过程中需要清洗烧杯等实验器材，并进行加热处理。目的是__________。 (3)冷却后，加入酸奶并搅拌的目的是__________________________________。某同学做实验时未冷却就加入酸奶，他能成功制成酸奶吗？ 。 (4)该实验中，设置的变量是____...
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