问题描述：
[单选]
研制了一个微机测量系统，这个系统可在5秒钟内 自动获得I-V曲线，精度为0．05%。（）
A．A micro-computerized measuring system is developed. An l-V characteristic curve can be automatically acquired in 5 seconds with an accuracy of 0.05%.
B．A micro-computerized measuring system, with which an l-V characteristic curve with an accuracy of 0.05% can automatically acquire it in 5 seconds, is developed
C．A micro-computerized measuring system is developed and automatically producec an l-V characteristic curve with an accuracy of 0.05% in 5 seconds.
D．A micro-computerized measuring system is developed which can automatically produce an l-V characteristic curve with an accuracy of 0.05% in 5 seconds.
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