单项选择题
A.20° B.30° C.45° D.60°
A.25±5℃，30min B.100±10℃，60min C.25±5℃，60min D.100±10℃，30min
A.60° B.90° C.120° D.150°
A.75mm B.100mm C.125mm D.150mm
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