题目内容

甘遂、大戟、芫花的共同点是

A. 有毒
B. 醋制可减低毒性
C. 反甘草
D. 归肺、肾、大肠经
E. 有泻水逐饮之功

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巴豆的主治病证是

A. 寒积便秘
B. 腹水臌胀
C. 寒实结胸
D. 喉痹痰阻
E. 疥癣恶疮

Lesson 5 背景知识听力填空Listen and fill in the blanks with proper words based on what you have heard.[音频]Ground Control is responsible for the airport "_1" areas, as well as areas not released to the airlines or other users. This generally includes all 2, _3_ runways, holding areas, and some transitional4. Any aircraft, 5_, or person walking or working in these areas is required to have clearance from Ground Control. This is normally done via 6 radio. People working on the airport surface normally communicate with ground control via 7 radio or even cell phone. Some busier airports have Surface Movement Radar (SMR) designed to _8 aircraft and vehicles on the ground. These are used by Ground Control as an additional tool to control ground traffic, particularly at night or in poor _9_Ground Control is vital to the 10 operation of the airport, because this position impacts the 11of departure aircraft, affecting the safety and 12of the airport's operation.

下列说法中错误的是 ( )

A. 在原电池中,正极发生氧化反应,负极发生还原反应
B. 在原电池中,电极电位较高的电对是原电池的正极
C. 原电池的电动势越大,电池反应的趋势越大
D. 原电池的电动势等于正极的电极电位减去负极的电极电位

根据φθ的数值,下列结论正确的是( )

A. 数值越大的电对氧化态的氧化能力越强。
B. 数值越大的电对还原态的还原能力越强。
C. 两个数值不同的电对可以构成原电池。
D. 数值与介质无关