多项选择题X 纠错
A.20N B.25N C.15N D.10N
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单项选择题
A.±1 B.±1.5 C.±2 D.±2.5
A.18.2% B.18.5% C.18.9% D.20.1%
A.210℃ B.215℃ C.220℃ D.225℃
A.99.80% B.99.90% C.99.95% D.99.97%
A.20N/cm B.25N/cm C.15N/cm D.18N/cm
A.40N/cm B.45N/cm C.50N/cm D.60N/cm
A.3N;5N B.4N;4N C.5N;5N D.5N;4N
A.3min B.4min C.5min D.6min
A.0.5 B.1.0 C.1.5 D.2.0
A.可控性 B.延展性 C.牢固性 D.可塑性
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