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【简答题】
下面是有关食醋和泡菜制作的实验。请回答: (1)食醋可用大米为原料发酵来制作:第一步:大米经蒸熟、冷却后加入淀粉酶,将原料中的淀粉分解成①____(填中间产物),然后进一步分解成葡萄糖,这一过程可用②______(填淀粉指示剂)来检测,因为该试剂遇淀粉呈蓝色,遇上述中间产物呈红色。 第二步:用③______菌将葡萄糖转化成乙醇,这一发酵过程中,玻璃发酵瓶不应完全密闭的主要原因是④__________________。 第三步:用⑤____菌将乙醇转化成乙酸,这一过程⑥____氧气。 (2)泡菜发酵过程中,会产生多种酸,其中主要是⑦______,还有少量的亚硝酸。对亚硝酸盐的定量测定可以用⑧________法,因为亚硝酸盐与对氨基苯磺酸的反应产物能与N-1-萘基胺偶联成⑨______色化合物。进行样品测定时,还要取等量水进行同样的测定,目的是⑩___________。
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参考答案:
举一反三
【单选题】不是实施精益生产的具体手法的是
A.
生产同步化
B.
生产均衡化
C.
生产人性化
D.
生产柔性化
【单选题】Negotiators for the two corporations have been mired in discussions for weeks but are now said to be ______ to finalizing an agreement.
A.
closed
B.
closing
C.
closest
D.
close
【单选题】The opponents think that globalization corporations have more power than nations.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】In Japan many workers for large corporations have a guarantee of lifetime employment. They will not be laid off during recessions or when the tasks they perform. are taken over by robots. To some obse...
A.
the guarantee of employment
B.
the consequence of recessions and automation
C.
the effect of lifetime employment
D.
the prospects of capitalism
【简答题】标志变异指标是衡量 的 的尺度,同时可用来反映社 会经济活动过程的 和 。
【单选题】The opponents think that globalization corporations have more power than nations.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】标志变异指标是衡量_____________的尺度;同时也可以用来反映社会生产和其他社会经济活动过程的____________、____________和____________。
【单选题】Traditionally, the largest corporations have opted for the passive approach, without ever thinking about their visual identity and diverse imagery.
A.
chosen
B.
taken
C.
elected
D.
marked
【单选题】The opponents think that globalized corporations have more power than nations.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Why many corporations have bought computers and switched their software?
A.
Because their computers were outdated
B.
Because Y2K will cause trouble
C.
Because their computers broke down
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