【简答题】某泡点进料的连续精馏塔中,进料组成x=0.35,系统的平均相对挥发度α=2.44,当x=0.88时,达到此分离要求的最小回流比R=()
【简答题】某泡点进料的连续精馏塔中,进料组成x=0.35,系统的平均相对挥发度α=2.44,当x=0.93时,达到此分离要求的最小回流比R=()
【单选题】活塞发动机汽缸头温度过高除易造成机件损坏外,还引起
【单选题】Choose the best choice according to the cultural context. Your American friend tells you that his dog just died and that he is very sad. You should say:
A.
"I can't imagine how you must feel. "
B.
"I know how you feel. "
【单选题】某泡点进料的连续精馏塔中 ,进料组成 x=0.35,系统的平均相对挥发度 α=2.44, 当 xD=0.90 时 ,达到此分离要求的最小回流比 Rmin=( ).
【单选题】Choose the best choice according to the cultural context. While you are talking with your American friend, she mentions that her grandmother died last year. You should say:
B.
"I'm sorry to hear that."
【简答题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____ .
【单选题】航空活塞发动机汽缸头温度过高除易造成机件损坏外,还易引起().
【简答题】不虚此行 ! It's a r_______ trip!
【单选题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____.