单项选择题
A.-32℃ B.-60℃ C.-40℃ D.常温
A.0.25±0.05Mpa60±30s B.0.25±0.05Mpa60±20s C.0.25±0.03Mpa60±30s D.0.25±0.03Mpa60±20s
A.200V/150ms B.200V/200ms C.150V/200ms D.150V/150ms
A.标识追溯 B.美观 C.领导要求 D.客户特殊要求
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