下套管作业中可能出现哪些复杂及事故？
参考答案：下套管作业中可能出现问题有以下几种：⑴卡套管；⑵套管下完后循环不通；⑶套管或回压阀挤毁；⑷套管断裂或泄露。
阅读理解。
There is a shop near my home.The people in the shop are friendly.On Sundays, we often go and buy things
there.It opens at six in the morning. It closes late in the evening.You can buy a lot of things in the shop.You can buy food, clothes, school things and many other things.But there are no English books there.
Now we are in the shop. My mother wants to buy a shirt for my father and a blouse for me.Then we'd like
to have a drink of orange.
请根据短文内容判断下列各句正( T ) 误( F ).
( )1.We often go to the shop and buy things on Saturdays.
( )2.The shop opens early in the morning and closes late in the evening.
( )3. My mother wants to buy clothes for my father.
( )4.There are no Chinese books in the shop.
( )5. The people in the shop would like to have a drink of orange.
可能有心功能不全存在（）
A．中心静脉压很低，尿量多
B．中心静脉压偏低，尿量少
C．中心静脉压偏低，尿量多
D．中心静脉压偏高，尿量多
E．中心静脉压很高，尿量少
