二元溶液,T, p一定时,Gibbs—Duhem 方程的正确形式是() A: x1dlnγ1/dx1+ x2dlnγ2/dx2 = 0 B: x1dlnγ1/dx2+ x2 dlnγ2/dx1 = 0 C: x1dlnγ1/dx1+ x2dlnγ2/dx1 = 0 D: x1dlnγ1/dx1– x2 dlnγ2/dx1 = 0
二元溶液,T, p一定时,Gibbs—Duhem 方程的正确形式是() A: x1dlnγ1/dx1+ x2dlnγ2/dx2 = 0 B: x1dlnγ1/dx2+ x2 dlnγ2/dx1 = 0 C: x1dlnγ1/dx1+ x2dlnγ2/dx1 = 0 D: x1dlnγ1/dx1– x2 dlnγ2/dx1 = 0
【单选题】二元 溶液 , T, P 一定时 ,Gibbs—Duhem 方程的正确形式是 (). A. X 1 dlnγ 1 /dX 1 + X 2 dlnγ 2 /dX 2 = 0 B. X 1 dlnγ 1 /dX 1 + X 2 dlnγ 2 /dX 1 = 0 C. X 1 dlnγ 1 /dX 2 + X 2 dlnγ 2 /dX 1 = 0 D. X 1 dlnγ 1 /dX 1 – X 2 dlnγ 2 /dX 1 = 0
【单选题】二元 溶液 , T, P 一定时 ,Gibbs—Duhem 方程的正确形式是 (). A. X 1 dlnγ 1 /dX 1 + X 2 dlnγ 2 /dX 2 = 0 B. X 1 dlnγ 1 /dX 1 + X 2 dlnγ 2 /dX 1 = 0 C. X 1 dlnγ 1 /dX 2 + X 2 dlnγ 2 /dX 1 = 0 D. X 1 dlnγ 1 /dX 1 – X 2 dlnγ 2 /dX 1 = 0
Gibbs--Duhem 方程正确的形式是( )。 A: X1dlnγ1+ X2dlnγ2= 0 B: X1dlnγ1- X2dlnγ2= 0 C: X1dlnγ1/dX1 - X2dlnγ2/dX1 = 0 D: X1dlnγ1/dX1 + X2dlnγ2/dX2 = 0
Gibbs--Duhem 方程正确的形式是( )。 A: X1dlnγ1+ X2dlnγ2= 0 B: X1dlnγ1- X2dlnγ2= 0 C: X1dlnγ1/dX1 - X2dlnγ2/dX1 = 0 D: X1dlnγ1/dX1 + X2dlnγ2/dX2 = 0
【单选题】集合A={x|-1≤x≤2},B={x|x<1},则A∩B=() A. {x|x<1} B. {x|-1≤x≤2} C. {x|-1≤x≤1} D. {x|-1≤x<1}
【单选题】集合A={x|-1≤x≤2},B={x|x<1},则A∩B=() A. {x|x<1} B. {x|-1≤x≤2} C. {x|-1≤x≤1} D. {x|-1≤x<1}
设A={x|-1<x<2},B={x|1<x<3},求A∪B. A: {x|-1<x<2} B: {x|-1<x<1} C: {x|-1<x<3} D: {x|2<x<3}
设A={x|-1<x<2},B={x|1<x<3},求A∪B. A: {x|-1<x<2} B: {x|-1<x<1} C: {x|-1<x<3} D: {x|2<x<3}
【单选题】若 f ( x ) = ( x − 1 ) x 2 − 1 2 , g ( x ) = x − 1 x + 1 ,则? A. f ( x ) = g ( x ) "> f ( x ) = g ( x ) B. lim x → 1 f ( x ) = g ( x ) "> lim x → 1 f ( x ) = g ( x ) C. lim x → 1 f ( x ) = lim x → 1 g ( x ) "> lim x → 1 f ( x ) = lim x → 1 g ( x ) D. 以上等式均不成立
【单选题】若 f ( x ) = ( x − 1 ) x 2 − 1 2 , g ( x ) = x − 1 x + 1 ,则? A. f ( x ) = g ( x ) "> f ( x ) = g ( x ) B. lim x → 1 f ( x ) = g ( x ) "> lim x → 1 f ( x ) = g ( x ) C. lim x → 1 f ( x ) = lim x → 1 g ( x ) "> lim x → 1 f ( x ) = lim x → 1 g ( x ) D. 以上等式均不成立
【单选题】设集合M={x | -1≤x≤3},N={x |1≤x≤6},则M∪N=( ) A. {x |-1≤x≤3} B. {x |-1≤x≤1} C. {x |-1≤x≤6} D. {x |-1≤x≤0}
【单选题】设集合M={x | -1≤x≤3},N={x |1≤x≤6},则M∪N=( ) A. {x |-1≤x≤3} B. {x |-1≤x≤1} C. {x |-1≤x≤6} D. {x |-1≤x≤0}
以下选项中,仅当x的绝对值在1至6范围内时,表达式值为“真”的是: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)|(x>=-6)||(x<=-1)||(x>=1)||(x<=6)|(x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)|(x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)
以下选项中,仅当x的绝对值在1至6范围内时,表达式值为“真”的是: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)|(x>=-6)||(x<=-1)||(x>=1)||(x<=6)|(x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)|(x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)
不等式(1+x)(1-|x|)>0的解集是()。 A: {x|0≤x<1} B: {x|x<0,且x≠-1} C: {x|-1<x<1} D: {x|x<1,且x≠-1}
不等式(1+x)(1-|x|)>0的解集是()。 A: {x|0≤x<1} B: {x|x<0,且x≠-1} C: {x|-1<x<1} D: {x|x<1,且x≠-1}
设置集合M={x丨-1≤x<2}。N={x丨x≤1},则集合M∩N=() A: {x丨x > -1} B: {x丨x > 1} C: {x丨-1 ≤ x ≤ 1} D: {x丨1 ≤ x ≤ 2}
设置集合M={x丨-1≤x<2}。N={x丨x≤1},则集合M∩N=() A: {x丨x > -1} B: {x丨x > 1} C: {x丨-1 ≤ x ≤ 1} D: {x丨1 ≤ x ≤ 2}