【简答题】化简下列各比: 0.48:0.一; m 二 : m s0 ; 4二分:m.二小时.
【简答题】67,0.69,0.48,0.88,0.29,1.07,()0.67,0.69,0.48,0.88,0.29,1.07,( )
【判断题】柴油的抗爆性能用十六烷值表示,十六烷值越高表示柴油抗爆性越好。
【简答题】现有数值如下:-0.84,-0.5,-0.34,-1.41,-0.15,0.79,-0.48,-0.65,0.25,1.46,1.18,-1.76,-0.66,0.12,0.65,-0.47,0.48,1.34,0.81,-1.05,-0.4,0.46,-0.38,0.58,0.11,-0.02,-1.04,0.6,0.53,0.57,2.57,1.09,-0.92,-0.38,-1.41,-0....
【判断题】发火性:指柴油的自燃能力,用十六烷值表示。
【单选题】67,0.69,0.48,0.88,0.29,1.07,( )
【简答题】现有数值如下:0.38,-1.06,0.68,-0.49,-1.75,0.33,-0.99,0.74,-0.9,0.98,0.18,1.26,-0.51,0.1,-0.76,-1.04,-0.68,-1.7,-0.34,0.61,-0.18,-0.53,-1.06,-1.13,-0.42,-0.48,1.73,-1.46,0.51,-1.28,-0.12,-1.58,1.53,0.57,0.22,...
【单选题】具有对映异构现象的烷烃分子所含的碳原子数最少为