单项选择题

The electronic computer is chiefly characterized by its accurate and rapid computation.

A．电子计算机的主要特性是计算准确和计算迅速。
B．电子计算机的主要特点是计算准确而迅速。
C．电子计算机是准确而迅速的。
D．电子计算机被准确和迅速定为其首要个性。
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