一溴代烃A在碱性条件下水解的产物经酸性高锰酸钾氧化得到有机物B ，A 的一种同分

直尺和厚薄规测量间隙一般不大于（）mm。

A.0.05～0.10

B.0.10～0.15

C.0.15～0.20

某化学反应低温自发、高温非自发，该反应的（）。

A.ΔH＜0，ΔS＜0

B.ΔH＞0，ΔS＜0

C.ΔH＜0，ΔS＞0

D.ΔH＞0，ΔS＞0

企业财务管理环节中的计划与预算环节包括的主要内容有（）。

A.财务预测

B.财务考核

C.财务计划

D.财务预算

Which of the following statement is closest in meaning to the passage you have just heard

A．The WTO ministerial conference held at Cancun is disappointing because the poor countries could not participate in the event.

B．The Cancun ministerial meeting was intended to create a more open and equitable trading system.

C．The main objective of the Cancun conference was to help the poorest countries in the world to develop their economy.

D．Opening up the market in poor countries would have a negative impact on their national economic development.

盒形洞的基本特点。下列哪一条是错误:（）

A．洞底要平

B．线角要园钝

C．要有一定深度

D．洞壁内倾