单项选择题
A.0.5mm B.1.0mm C.1.5mm D.2.0mm E.2.5mm
A.90~100℃ B.100~110℃ C.110~120℃ D.120~130℃ E.130~140℃
A.1/4 B.1/3 C.1/2 D.2/3 E.3/4
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