单项选择题

How should "field call" in the forth sentence analyzed be understood?

A.receiving the call that is given to anyone
B.receiving the unexpected call from anxious parents
C.receiving the timely call when in need
D.receiving the call from the subburb
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问答题

设f(z)在z平面上解析,且|f(z)|恒大于一正的常数,试证f(z)必为常数。

答案: 正确答案:刘维尔定理|1/f(z)有界整函数|常数
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