【多选题】下列说法正确的是( )
C.
3年以上的酒,呈现出简单果味加木桶辛香的年轻派
D.
酒庄一般从葡萄园耕作、到酿酒、到陈年、到装瓶都由酒庄自己完成
【多选题】下列说法正确的是。
A.
陈酿时间越久,白兰地的风格就越柔顺,香气也就越精美,价格也就越昂贵。
B.
白兰地最佳饮用酒龄为20-40年,一般不超过50年,顶多不会超过70年
C.
新蒸馏出来的原白兰地口味暴辣,香气不足,它从橡木桶的木质素中抽取橡木的香气,与自身单宁成分氧化产生的香气结合起来,形成一种白兰地特有的奇妙的香气。
D.
用葡萄皮或葡萄渣作原料制作白兰地,发酵时间一般需要10-15天,温度适宜只需7-8天。
【判断题】使用重金属盐沉淀蛋白质时,其等电点要高于蛋白质的等电点。
【简答题】什么是蛋白质的等电点?蛋白质处于等电点时有什么特征?
【简答题】“文明开化”是明治维新的有机组成部分,给日本社会带来了震撼和反思。阅读下列材料: 材料一 1872 年太政官发布废止幕府时代服饰的布告,自天皇以下,达官贵人纷纷在正式场合身穿西洋大礼服,洋服一时成了时髦衣着。饮食结构也在变化,幕府时代禁食的牛肉被称为“开化的药铺”、“文明的药剂”,“士农工商、男女老少、贤愚贫富等咸以不食牛肉为不开化”,牛肉火锅店里顾客盈门。一群群年轻人聚在店里边大嚼牛肉,饮用葡萄...
【单选题】Studies have shown that companies that present seminars on workplace safety to their employees actually have higher rates of workplace accidents than do companies that do not present such seminars to ...
A.
Companies that present workplace safety seminars to their employees are likely to be in manufacturing industries or segments of the service sector that present more opportunities for workplace accidents than the average company.
B.
A fast-food chain determined that the rate of workplace accidents remained the same at its franchises after all employees had viewed a 30-minute workplace safety video.
C.
Workers are ultimately responsible for their own safety, and no amount of workplace education can alter their behavior.
D.
A business research institute determined that workplace accidents reduce the productivity of manufacturing businesses by as much as 8 percent per year.
E.
Many companies mistakenly believe that presenting workplace safety seminars to their employees relieves the company of legal liability in the event that employees are injured on the job.
【单选题】关于蛋白质等电点的叙述,下列哪项是正确的 [ ]
E.
蛋白质的等电点与它所含的碱性氨基酸的数目无关
【简答题】蛋白质的等电点:____________________________________________。