多项选择题
A.832修约到“百”数位的0.2单位修约为830B.-930修约到“百”数位的0.2单位修约为-920C.60.25修约到“个”数位的0.5单位修约为60.0D.-60.75修约到“个”数位的0.5单位修约为-61.0
A.落锤重:15kgB.最大冲击力(7070±70.7)NC.承载板直径为(300±0.5)mm,厚度为(20±0.2)mmD.导向杆应平直、光洁
A.17℃B.20℃C.25℃D.28℃