用于最大化激活窗口的宏命令是______。A.Minimize B.Requery

题型:单项选择题

问题:

用于最大化激活窗口的宏命令是______。

A.Minimize

B.Requery

C.Maximize

D.Restore

考点:计算机等级考试ACCESS二级ACCESS笔试41
题型:单项选择题

已知2X(g)+Y(g)2Z(g) △H<0,在500℃时将2molX和1molY 装入一个体积恒定的10 L密闭容器中,

2 min (t1)时达到平衡,如下图所示。

请回答下列问题:

(1)用Y表示2 min内该反应的平均反应速率为________,计算500℃时该反应的平衡常数K1=_________。

(2)某温度时该反应的平衡常数K2的数值为800,则此时的温度_______(填“大于”“小于”或“等于”)500℃。

(3)上图表示该反应在时刻t1时达到平衡后,时刻t2因改变某个条件而发生的变化情况,图中时刻t2发生改变的条件可能是____________ (只写一个条件)。

(4)500℃时,若起始装入的X、Y、Z分别为0.4 mol、amol、b mol,达到平衡时各组分的含量与题干中所达到的平衡完全相同,则a=_____mol,b=____mol,刚开始时反应向______反应方向进行(填“正”或“逆”)。

题型:单项选择题

1米=109纳米,水星的半径为2440000米,即(          )纳米。

题型:单项选择题

The story goes that some time ago, a man had a very lovely little daughter. One day the man punished his 3-year-old daughter for wasting a roll of gold wrapping paper. Money was tight and he became angry when the child tried to decorate a box to put under the Christmas tree. But the little girl brought the gift to her father the next morning and said, “This is for you, Daddy.”

The man was embarrassed by his earlier act, but his anger broke out again when he found out the box was empty. He shouted at her, saying, “Don’t you know, when you give someone a present, there is supposed to be something inside?” The little girl looked up at him with tears in her eyes and cried, “Oh, Daddy, it’s not empty at all. I blew kisses into the box. They are all for you, Daddy.”

The father was ashamed. He put his arms around his little girl, and he begged for her forgiveness.

Only a short time later, an accident took the life of the child. It is also told that her father kept that gold box by his bed for many years and whenever he was discouraged, he would take out an imaginary kiss and remember the love of the child who had put it there. In a very real sense, each one of us, as human beings, has been given a gold box filled with unconditional love and kisses… from our children, family members friends and God. There are simply no other things anyone could hold, more precious than this.

阅读短文,判断正(T)误(F)。

小题1:The girl hated her father because her father punished her and was mean in money.

小题2:The story happened on Christmas Eve.

小题3:The girl’s father felt very regretful because he didn’t understand the love of her daughter and hurt her at first.

小题4: Sadly, the girl died from her self-respect being hurt.

小题5:  Unconditional love and kisses from our beloved people are the most precious of all things.

题型:单项选择题

工业文明与生态文明是同步发展的。

题型:单项选择题

既能消食和胃,又能发散风寒的药物是( )

A.神曲
B.紫苏
C.藿香
D.山楂
E.陈皮

更多题库