PC串口采用异步通信方式,传送一个字节时,须附加起始位及停止位等。若1帧信息共有11

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问题:

PC串口采用异步通信方式,传送一个字节时,须附加起始位及停止位等。若1帧信息共有11位而传送波特率为9600,则传送1帧需要的时间为()ms(保留1位小数)。

考点:计算机等级考试PC技术三级PC技术真题2009年09月
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The basketball final between Perfect School and Sunrise School has entered white-hot stage. There are only fifteen seconds left. Sunrise School is one point ahead. Mitchell, who is one of the best players of Perfect School, is now controlling the ball. The students are extremely excited. They cannot help standing up and shouting, “Go! Mitchell!”Other teammates also encourage Mitchell, “Take a shot, boy!”

Mitchell knows it will be the last shot. He hesitates (犹豫) and falls into careful thinking. He imagines that he shoots from the halfway line. The hall turns quiet. All eyes follow the track of the basketball. It jumps round the ring over and over again and finally rolls out of the court. The world turns noisy. Mitchell sees his coach lower his head, his teammates kneel down and his fans cry. It gives him so much pain. It is the last match for his coach before retiring. All the teammates practiced hard and hoped to give their coach a perfect ending. But now, the bubble bursts (破裂).

“Is that what you want?” Mitchell asks himself.“Certainly not. But how can I change the situation? Teamwork!”Mitchell returns to reality from his thinking. He does not have a shot by himself but surprisingly passes the basketball to his teammate, Jack, who is standing near the basket. Jack catches the basketball and quickly scores a two-point shot. There goes the whistle at the same time. Perfect School finally wins the game.

小题1:When there are only fifteen seconds left, ______.

A.the students are surprised

B.Mitchell’s coach is shouting

C.Sunrise team is one point ahead

D.Perfect team is two points ahead小题2:How does Mitchell help his team win the game?

A.He tries to stand near the basket.

B.He passes the basketball to Jack.

C.He shoots from the halfway line.

D.He quickly scores a two-point shot.小题3:What can we learn from the story?

A.Teamwork helps win the game.

B.Jack is the most popular player.

C.The coach will retire next year.

D.The hall turns quiet after the final shot.

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8个月婴儿,于11月8日因呕吐、水样泻、发热、流涕2天入院。大便镜检白细胞1~3个/HP,可见脂肪滴,大便pH偏酸性,可能的病原体是

A.致病性大肠埃希菌

B.真菌

C.腺病毒

D.金黄色葡萄球菌

E.轮状病毒

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C.法的学术作用

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