排水管与水泵间应装设闸阀和止回阀,闸阀内径不得()管子直径,止回阀装在闸阀后面。
A、大于
B、等于
C、小于
D、高于
参考答案:C
读短文,判断正(T)误(F)。
I'm Sarah. I have three new teachers, a science teacher, an art teacher and an English teacher. My science
teacher is Mr. Liu. He's tall and thin. My art teacher is Miss Zhao. She's pretty and young. My English teacher
is Miss Sun. She's an old woman. She's kind.
( ) 1. I have two new teachers.
( ) 2. My art teacher is an old woman.
( ) 3. My English teacher is Miss Sun.
( ) 4. My science teacher is tall and thin.
( ) 5. Miss Sun is strict.
医务人员应共同遵守的道德原则以及建立良好医际关系的思想基础是()
A.病人利益至上
B.医生利益至上
C.医院利益至上
D.社会利益至上
E.以上都不是