已知液化石油气气相的各组分质量成分为：gC3H8=50%，gC4H10=50%，在标

阅读短文并判断正误，正确的写T，错误的写F。

      Look at the picture! There is a man in it. He is my uncle. He is my father's brother. He is an English teacher.

He is tall and strong. He is good at sports. My aunt is a nurse. She's quiet. She likes music. They have a child

(孩子). She's a girl. She has long hair. She's a student. She likes science. They are happy together.

( ) 1. There are four people in my uncle's family.

( ) 2. My uncle is my father's father.

( ) 3. My uncle likes sports.

( ) 4. My aunt is a student.

( ) 5. The girl likes science.

中央银行货币政策的首要目标一般是（）。

A.稳定物价

B.充分就业

C.经济增长

D.国际收支平衡

输卵管复通术的术前准备不正确的是（）

A.术前一日备皮

B.术前12小时禁食，4小时禁水

C.术前肥皂水灌肠

D.术前清洁灌肠

E.术前安放尿管

在一个容量为25的循环队列中，若头指针front=16，尾指针rear=9，则该循环队列中共有 【4】 个元素。

某汽油喷射发动机发生续燃，以下哪项正确？（）

A.汽油回油管堵塞

B.汽油断油电磁阀失效

C.点火开关关闭后，电动汽油泵仍然运转

D.以上都正确

E.以上都不正确