单项选择题
A.4.8V-5.2V B.4.9V-5.2V C.4.9V-5.1V D.4.8V-5.1V
A.96%±1 B.90%±1 C.99%±1 D.100%±1
A.≥85% B.≥90% C.≥94% D.≥99%
A.96%~99% B.90%~99% C.85%~95% D.90%~100%
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