( )是由房地产估价工作的性质决定的，是房地产估价的最高行为准则，是房地产估价师的

阅读短文，选择正确答案。

      My name is Li Ping. My English teacher is Sue. She is from the U. S. She has a son and a daughter.

Her son is Paul. Paul is a clerk. Her daughter is Cathy. Cathy is a student. We are in the same school. We're

classmates and we are good friends.

1. Sue is Cathy's _____________.

A. mother

B. father

C. student

2. Paul is a _____________.

A. cashier

B. student

C. clerk

3. Cathy and I are in _____________ school.

A. different

B. the same

C. No.1

驾/机联系制度中，开航前2小时值班驾驶员应同值班轮机员核对船钟、车钟、试舵等内容，并分别将其记录在有关日志内。

氢气和氧气的混合气体共15g，使它们化合后生成水9g，则原混合气体中氧气的质量是（　　）g．

A．8g或6g

B．肯定是8g

C．8g或14g

D．5g或10g

思想形势分析会，一般情况下，支队党委每季度、基层党支部每月分析一次，遇特殊情况和发生重大问题时，要及时分析。

1岁以内小儿正常心率为

A．80～90/min
B．90～100/min
C．100～110/min
D．110～130/min
E．130～150/min