【简答题】在烘燥的全过程中,必须具备以下两个条件: (1)使织物中水分蒸发所必需的热量;(2) 。 当以上两个条件 时,可达到最佳的烘燥效果。
【判断题】Molecular nutrition is mainly the study of nutrients and phytochemicals (or called food components) rules and mechanisms and interactions between genes and their influence on human health, promote the...
【判断题】理想是一定社会关系的产物,因此具有阶级性。
【单选题】某电池的电池反应可写成: (1) H 2 (g) + 1/2O 2 (g) → H 2 O(l) (2) 2H 2 (g) + O 2 (g) →2H 2 O(l) 用 E 1 , E 2 表示相应反应的电动势 , K 1 , K 2 表示相应反应的平衡常数,下列各组 关系正确的是
B.
E 1 =1/2 E 2 K 1 = K 2
D.
E 1 = E 2 K 1 = 1/2 K 2
【单选题】某电池的电池反应可写成:(1) H2(g) + 1/2O2(g) → H2O(l) (2) 2H2(g) + O2(g) → 2H2O(l) 用 E1,E2表示相应反应的电动势,ΔrGm,1,ΔrGm,2表示相应反应的摩尔反应吉布斯自由能变,下列各组关系正确的是( )
A.
E 1 = E 2 Δ rGm ,1 = Δ rGm ,2
B.
E 1 ≠ E 2 Δ rGm ,1 = Δ rGm ,2
C.
E 1 = E 2 Δ rGm ,1 ≠ Δ rGm ,2
D.
E 1 ≠ E 2 Δ rGm ,1 ≠ Δ rGm ,2
【单选题】Molecular nutrition is mainly the study of nutrients and phytochemicals (or called food components) rules and mechanisms and interactions between genes and their influence on human health, promote the...
【单选题】What does “Lampert has been milking Kmart for cash” mean?
A.
Lampert has been putting money into Kmart.
B.
Lampert has been feeding Kmart with milk.
C.
Lampert has been squeezing cash from Kmart.
D.
Lampert has been pushing Kmart to raise more cash.
【单选题】反应A(g)+B(g)―→C(g) ΔH,分两步进行:①A(g)+B(g)―→X(g) ΔH 1 ;②X(g)―→C(g) ΔH 2 。反应过程中能量变化如图1所示,E 1 表示A+B―→X的活化能,下列说法正确的是( )
B.
X是反应A(g)+B(g)―→C(g)的催化剂
【判断题】理想是一定社会关系的产物,因此具有阶级性