如果8251A的方式字寄存器的地址为2F1H，则它的控制字寄存器的地址是( )。 A

I am Peter Smith. I am from the USA.I like to play basketball and volleyball. I can speak Chinese, but not much. I am in the school basketball club. I am not busy on Tuesday afternoon and Friday afternoon. I want to play basketball and speak Chinese with Chinese-speaking students. Please call me at 13899495387.

I am Jack Liu. I am from China. I like to play ping-pong and soccer. I like basketball, too.I can speak English, but not very well. I am in the school soccer club. I have time on Monday afternoon and Friday afternoon. I want to talk to English-speaking students. My phone number is 13348954621.

小题1:Peter Smith is an American student, and he plays basketball.

小题2:Peter has time on Wednesday and Tuesday afternoon.

小题3:Jack is a Chinese-speaking student. He wants to talk to an English speaker.

小题4:Jack and Peter can meet on Friday.

小题5:The two boys aren’t from the same country.

严重发绀性心脏病患儿出现蹲踞是由于（）

A.氧饱和度过低

B.心脏后负荷过重

C.呼吸困难

D.脑血管痉挛

E.心脏前负荷过重

储蓄业务印章在使用中要加盖到位，印迹清晰，严禁在重要空白凭证上（）。

组合式后处理装置再生耗气量为（）。

冶炼普通钢吨金属氧耗量一般在（）Nm³/t。

A.20～30

B.30～40

C.50左右

D.>60