DSC-5000型双筒试井车钢丝绞车滚筒最大提升负荷为（）kN。A、5 B、5.5

阅读理解，判断正"T"误"F"。

       There are four people in my family: my grandma, my father, my mother and I. My fatheris a doctor.

He works hard. My mother is amaths teacher. She teaches maths very well. Her students all like her. My

grandmadoesn't work. She is old. Sometimes she helps my mother do the housework. I am aprimary

school pupil. I study hard. I think Ilive a happy life.

( ) 1. There are three people in my family.

( ) 2. My mother is a teacher.

(     ) 3. My grandma doesn't do the housework.

(     ) 4. My grandma is young.

(     ) 5. My father works in a hospital(医院). He is a doctor.

甲状腺功能减退症的临床表现为（）

A.反应迟钝

B.暂时性肌强直

C.黏液性水肿

D.甲亢危象

E.心动过缓、心包积液和心脏增大

患者，女，27岁，结婚4年，不孕，临床诊断多囊卵巢，其声像图表现不包括（）。

A.卵巢髓质内可见丰富血流，回声增强

B.一个切面可见10个以上卵泡

C.双侧卵巢增大，包膜回声增强

D.卵巢内可见小于5mm多个卵泡

E.卵巢髓质回声明显减弱

一项1:1配比病例对照研究，共调查 240对，病例和对照均有某种暴露史 60对，均无某种暴露史75对，病例有某种暴露史、对照无某种暴露史70对，对照有某种暴露史、病例无某种露史35对，其OR值为

A．1.7
B．1.3
C．0.5
D．0.9
E．2.0

在液压传动中，能够实现将电动机的机械能转化为流动液体的压力能的装置称为（）。

A.液压泵

B.液压马达

C.油缸

D.阀门