单项选择题
按频率减负荷装置的年投入率应()、年负荷投运率应()
A.≧98%;≧99%
B.≧98%;≧100%
C.≧100%;≧98%
D.≧97%;≧97%
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单项选择题
A.≧98%;≧99%
B.≧98%;≧100%
C.≧100%;≧98%
D.≧97%;≧97%
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