单项选择题
A.10% B.13.5% C.15.5% D.10.5%
A.17.5%~18.0% B.18.5%~20.0% C.15.5%~17.0% D.17.0%~18.0%
A.17.5%~18.0% B.18.5%~20.0% C.15.5%~17.0% D.10.5%~13.0%
A.175~180℃ B.75~80℃ C.50~60℃ D.37~38℃
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