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【多选题】
下列哪些是合成防腐剂( )。A.
丙酸钠
B.
山梨酸钾
C.
纳他霉素
D.
苯甲酸
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皮皮学刷刷变学霸
举一反三
【单选题】Suicide rates tend to fluctuate with the seasons, with much higher rates in the winter than in the summer.Fluctuate means:
A.
go up and down
B.
disappear
C.
stay the same
【单选题】Nominal interest rates tend to be higher in countries with
A.
higher rates of inflation
B.
lower rates of inflation
C.
lower real interest rates
D.
Both B and C
【简答题】表达轴上的键槽,一般用 断面图。
【单选题】Suicide rates tend to fluctuate with the seasons, with much higher rates in the winter than in the summer.
A.
go up and down
B.
disappear
C.
stay the same
D.
0
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