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【简答题】
取VB210片(标示量为10mg/片)精密称定为0.1288g研细，取细粉0.0123g，置1000ml量瓶中，加冰醋酸 5ml与水100ml，置水浴上加热，使VB2溶解，加水稀释至刻度，摇匀，过滤，弃去初滤液，取续滤液置1cm比色池中，在444nm处测得A=0.308，按C17H20O8N4的 =323计算标示量％？
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举一反三
【单选题】If it is generally acceptable as a medium of exchange then it
A.
must be a commodity.
B.
must be a precious metal such as gold or silver.
C.
is money.
D.
all of the above.
【单选题】Let us suppose the boundary between two States is a river, if it is navigable, and unless a treaty provides otherwise, the boundary is generally .
A.
one of the two banks of the river
B.
the mid-line of the river
C.
the mid-line of the principal channel
D.
the river bed
【简答题】Before I went to Yellowstone Park, I had never seen a black bear in the wild.
【简答题】简述Java面向对象特性。
【简答题】运动性低血糖,如何处理?
【判断题】Later, mother bought me a pair of size 5, stuffing one shoe with toilet paper so it would fit my smaller foot. I went to the first dance. I managed to take a turn with a boy so tall that I couldn’t...
A.
正确
B.
错误
【单选题】If no one is aware of conflict, it is generally agreed that ________
A.
employee - employer relations will be good
B.
conflict is subversive
C.
no conflict exists
D.
conflict is inevitable
【判断题】Spectators will generally be interested in a game if it is going to be a close contest.
A.
正确
B.
错误
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