某乘用车总重Ga=1000kg,汽车滚动阻力系数f’=0.013,汽车迎风面积CDA=0.8m2,车速Va=30km/h,传动效率ht=0.8,汽油密度ρ=0.714kg/L(7N/L),发动机的比油耗ge=280g/kWh。求汽车上坡(i=0.1)时的百公里油耗。
天然气的热值有几种量度?
什么是行政协调?怀特认为应如何解决行政协调问题?
Which two statements are true about the hashCode method?() ["The hashCode method for a given class can be used to test for object equality and object inequality for that class.","The hashCode method is used by the java.util.SortedSet collection class to order the elements within that set.","The hashCode method for a given class can be used to test for object inequality, but NOT objecte quality, for that class.","The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.","The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval."]
服务的主体、固有特征,服务的主要、基本内容,这是指服务的() ["显性要素","隐性要素","物品要素","环境要素"]
由具有主从关系的分句构成的复句叫()。