蛋白质和核酸中共有的化学元素是（）。 A.C、H、O B.C、H、O、N、P C.C

根据短文内容判断正(T)误(F)。

     Ben likes sports. He plays sports every day. He likes playing basketball. Because (因为) he thinks it is

very interesting. He likes playing volleyball, too. Because he thinks it is fun. Ben has a great sports collection.

He has 49 basketballs, 82 tennis rackets, 65 baseballs, 26 volleyballs and 52 soccer balls.

( )1. Ben doesn't like sports.         

( )2. He likes baseball only (仅仅).   

( )3. He doesn't like volleyball.     

( )4. He has a small sports collection.

( )5. He doesn't have computers.      

男孩3天，生后吃奶喝水后即呛咳，带泡沫唾液自鼻孔溢出，腹胀气，是何种病

A．Ⅰ型食管闭锁

B．Ⅳ型食管闭锁

C．Ⅴ型食管闭锁

D．Ⅱ型食管闭锁

E．Ⅲ型食管闭锁

一般SOP制定后由技术部门审核，总工程师复核，厂长签发。

逆流布置的过热器，其蒸汽温度低的一端，处于烟气高温区。

建设单位未取得施工许可证或者开工报告未经批准，擅自施工的，责令停止施工，限期改正，处工程合同价款（）以下的罚款。

A.1%以上2%以下

B.0.5%以上1%以下

C.1.5%以上2%以下