在条件允许的情况下，争取在发油不太久以后就接着收油，使排出容器外的混合气体中的油品蒸气的浓度较低，大呼吸损耗就较小。（）
参考答案：对
阅读理解。
Look! This is a picture of my family. My mother is a doctor. My father is a teacher. This is my brother. His name is Harry. He's twelve. He's a student. That is my grandmother. Ah, this is me. My name is May. I'm ten. I'm a student. Harry and I are in the same school.
根据短文内容，判断下列句子正（T）、误（F）。
( )1. This is a picture of my family.
( )2. My mother is a teacher.
( )3. Harry is my brother.
( )4. Harry is twenty.
( )5. Harry and I are in the same school.
心包积液表现为（）。
A.心包增厚，粘连、钙化
B.透声较差的液性暗区内有细点状及斑点状回声
C.心包脏层与壁层之间液性暗区
D.壁层胸膜变薄
E.胸膜脏层与壁层之间液性暗区
