单项选择题

下面哪种情况不会影响数值稳定性( )。

A．两个相近的数相减
B．很小的数做除数
C．两个数量级相差很大的数相加
D．两个相近的数相加

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单项选择题

How do you describe Cal's love for Rose? A.
He understands her feelings from her inner heart. B.
They share similar values. C.
He gives a precious diamond to Rose and he loves her deeply. D.
His love is a kind of selfish possession.

单项选择题

目前,质谱应用的最"软"的电离方式是:

A．CI
B．EI
C．FAB
D．ESI