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【单选题】
以配位滴定法测定铝。30.00mL0.01000mol/L的EDTA溶液相当于Al2O3（其摩尔质量为101.96g/mol）多少毫克？（）A.
30.59
B.
15.29
C.
.01529
D.
10.2
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举一反三
【单选题】On the break even point,
A.
The price is equal to firm’s average variable cost.
B.
The price is equal to firm’s average cost.
C.
The price is equal to firm’s average fixed cost.
D.
The price is equal to firm’s total variable cost.
【简答题】The break-even point is the sales level at which operating income is zero and revenues equals total expenses.
【单选题】There is even an animal whose tail will _____ so that it can run away if someone grabs it.
A.
break down
B.
break up
C.
break out
D.
break off
【简答题】There is even an animal whose tail will so that it can run away if someone grabs it. A．break up B．break out C．break off D．break down
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