【单选题】As NC machines need a large capital investment, we should efficient ly use the m .
【判断题】As NC machines need a large capital investment, we should efficiently use them
【判断题】饮食卫生“五四制’’中的个人卫生做到“四勤”,即勤洗手、勤剪指甲、勤洗澡、勤理发。
【判断题】As NC machines need a large capital investment, we should efficiently use them.