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【简答题】
称取含磷样品0.10g，处理成溶液，并把磷沉淀为MgNH 4 PO 4 ，将沉淀过滤后再溶解，然后用0.01mol/L EDTA标准溶液滴定，共消耗20.00mL，求该样品中P 2 O 5 的含量。[M(P 2 O 5 )=141.96g/mol]
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举一反三
【单选题】The meaning of "Stay hungry, stay foolish" is "________."
A.
Work hard to support yourself and read more books
B.
Don't pay too much attention to material things becasue they make you foolish
C.
Be curious and brave enough to be unconventional
D.
Go hitch-hiking if you were adventurous and add poetic touch to your life
【单选题】On the graph, consumer surplus would be area
A.
between the demand and supply curves.
B.
below the demand curve and above price.
C.
below the price and above the supply curve.
D.
below the demand curve to the right of equilibrium price.
【单选题】On a graph, consumer surplus is represented by the area
A.
between the demand and supply curves.
B.
below the demand curve and above price.
C.
below the price and above the supply curve.
D.
below the demand curve and to the right of equilibrium price.
【单选题】On a graph, consumer surplus is represented by the area
A.
a. between the demand and supply curves
B.
b. below the demand curve and above price.
C.
c. below the price and above the supply curve
D.
d. below the demand curve and to the right of equilibrium price.
【单选题】“法治思维以法治价值和法治精神为指导,蕴含着公正、平等、民主、人权等法治理念。”这说明法治思维的哪个含义。
A.
正当性思维
B.
规范性思维
C.
逻辑思维
D.
科学思维
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