A.臺(tái)B.組C.相D.套
A.人工乘以系數(shù)1.05,機(jī)械乘以系數(shù)1.2B.人工乘以系數(shù)1.2,機(jī)械乘以系數(shù)1.05C.人工和機(jī)械都乘以系數(shù)1.2D.人工和機(jī)械都乘以系數(shù)1.05
A.0.3B.0.5C.0.6D.0.8