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【单选题】
下列含氧酸盐中,热稳定性最强的是 ( )。A.
KNO 3
B.
K 3 PO 4
C.
KClO 4
D.
AgNO 3
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反馈参考答案：
举一反三
【简答题】计算几均数应满足的条件是（ ）。
【简答题】What is true about The Cat in the Hat?
【简答题】What is NOT true about the scramjet engine?
【单选题】According to this advertisement, what is true about delivery?
A.
The customer doesn' t have to pay for the delivery if they buy before Sunday.
B.
Rico' s World of Sofa' s pays 10% of delivery fee for the customers.
C.
Delivery is always free.
D.
Only someone who purchases over $ 1,000, gets free delivery.
【多选题】计算几何平均数应满足的条件是（ ）
A.
总比率等于若干个比率之和
B.
总比率等于若干个比率的乘积
C.
总速度等于若干个速度的乘积
D.
被平均的变量值可以为任意数
E.
被平均的变量值不得为负数
【单选题】What is TRUE about the words?
A.
They are spoken or written sounds.
B.
They can't be written down.
C.
They are used to express feeling only.
D.
They are soundless signs.
【单选题】What is TRUE about the words?
A.
They are used to express feeling only.
B.
They can't be written down.
C.
They are spoken or written sounds.
D.
They are soundless signs.
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