单项选择题X 纠错
A.1m;0.25m B.1m;0.50m C.1.50m;0.25m D.1.50m;0.50m
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单项选择题
A.1min B.3min C.5min D.10min
A.2~4m B.4~8m C.8~12m D.12~16m
A.CaCO3 B.Ca(OH)2 C.CaO D.CaSO4
A.长;小 B.长;大 C.短;小 D.短;大
A.20cm×20cm B.30cm×30cm C.40cm×40cm D.50cm×50cm
A.1:1.15 B.1:1.25 C.1:1.3 D.1:1.5
A.0.15m B.0.20m C.0.25m D.0.30m
A.0.05 B.0.10 C.0.15 D.0.20
A.25~50kPa B.50~100kPa C.100~200kPa D.200~400kPa
A.30 B.50 C.80 D.100
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