发电厂发生事故时，（）是处理事故的指挥人。A、值长； B、系统调度员； C、厂长；

某校研究性学习小组准备利用课余时间开展一次登山活动，并研究大气压随高度的变化情况，请你利用身边常见的器材，设计一个简易的气压计，要求：

（1）列出你所需的器材，画出简图；

（2）说明怎样利用此气压计来观察大气压的变化？

房扑首选的复律方法为（）

A.西地兰

B.奎尼丁

C.慢心律

D.同步电复律

E.人工起搏超速抑制

今年“世界环境日”的主题为生态安全与环境友好型社会．下列措施能治理相关污染的是（　　）

A．温室效应   使用无铅汽油

B．赤潮     使用含磷洗衣粉

C．酸雨        工业废气直接排放

D．沙尘暴      植树造林

A、B、C、D、E、F、G、H、I、J均为有机化合物．根据以下框图，回答问题：

（1）B和C均为有支链的有机化合物，B的结构简式为______；C在浓硫酸作用下加热反应只能生成一种烯烃D，D的结构简式为______．

（2）G 能发生银镜反应，也能使溴的四氯化碳溶液褪色，则G的结构简式______．

（3）写出：

⑤的化学方程式是______．⑨的化学方程式是______．

（4）①的反应类型是______，④的反应类型是______，⑦的反应类型是______．

（5）与H具有相同官能团的H的同分异构体的结构简式为______．

Bao owns 10% of the ordinary shares in XYZ Joint Stock Company, a shareholding company. Having read the annual report of the company he is angry that the Board of Management has awarded signifi cant pay increases to five key senior employees on the basis that they have developed new products that are expected to contribute substantial profits in the next fi ve years. The products are still under development and will not be launched until next year. The company is proposing a reduction in dividends for the current year in order to provide extra capital for investment in the new products, even though the company’s profi ts have increased signifi cantly over those earned in previous years.Required:

(a) Discuss the actions that Bao can take to object to the decisions of the Board of Management in respect of its proposed strategy. (6 marks)