改变喷煤量直接影响炉缸热制度变化，喷煤热滞后时间一般为（）小时。A、1小时B、2小时

An artist went to a beautiful place of the country for a holiday, and stayed with a farmer. Every day he went out and painted from morning to evening. When it got dark, he came back to the farm and had a good dinner before he went to bed.

At the end of his holiday he wanted to pay the farmer, but the farmer said, “No, I don’t want money but give me one of your pictures. What is money? In a week it will all be finished, but your painting will be here.”

The artist was very pleased and thanked the farmer for saying such kind words. The farmer smiled and said, “I have a son in London. He wants to become an artist. When he comes here next month, I will show him your picture, and then he will not want to be an artist any more, I believe.”

小题1:The artist liked to ___________ near a nice place.

A．sing songs

B．dance

C．paint pictures

D．write something小题2:He liked painting ____________.

A．in a house

B．in the open air

C．because he would do well in painting

D．with the most important artist小题3:The farmer thought that the artist ____________.

A．was not good at painting

B．was really a great man

C．did well in painting

D．was the most important artist小题4:The farmer’s son wanted to __________ some day.

A．be an artist

B．become a popular singer

C．write twenty novels .

D．dance around the world小题5:The farmer ____________.

A．was a foolish man

B．didn’t want his son to be a painter

C．liked the artist’s picture very much

D．couldn’t pay for his son about his paintings

干粉灭火系统采用全淹没灭火系统的灭火剂设计浓度不得小于（）kg/m³。

A、0.65

B、0.55

C、0.60

D、0.50

EQ6100型汽车发动机曲轴的轴向间隙为（），间隙超过极限时应（），间隙过小可对（）进行调整。

嵌入式系统硬件初始化过程分为3个主要环节，按照自下而上、从硬件到软件的次序依次是______。

A．板级→系统级→片级
B．系统级→板级→片级
C．片级→板级→系统级
D．系统级→片级→板级

飞机沿倾斜向上直线等速上升时，（）.

A.作用在飞机上的外载荷是平衡力系，所以升力等于飞机重力。

B.作用在飞机上的外载荷是平衡力系，推力等于阻力。

C.推力大于阻力，是平衡力系。

D.升力小于飞机重力，外载荷不是平衡力系。