单项选择题
A.＞0.12MPaB.≥0.12MPaC.＞0.10MPaD.≥0.10MPa
A.50±5℃B.52±5℃C.50±2℃D.52±2℃
A.≤40minB.＜40minC.≤45minD.＜45min
A.40〜60B.40〜65C.45〜60D.45〜65
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