I much prefer this candidate—thought she was________better than the other onE.

单项选择题Laser-doppler radar is especiallyvaluable in space missions because__________．A.it can measure themovement of a spaceship less accurately than a microwave radarB.it is a new system ofradarC.it provides precisemeasures of the velocity of space vehiclesD.it is onethousand times more precise than microwave radar

单项选择题当联产品进一步加工后的销售收入减去分离后的销售收入小于可分成本时，应在分离后立即出售。 A、正确 B、错误