【单选题】Speakers often get de-railed when they make a mistake. The way to handle that is :()
A.
When you make a mistake, admit it, and try to not do it again
D.
When you make a mistake, MOVE ON, the audience won't even know most of the time!
【多选题】要领是对客观事物的本质属性的反映,它是( )。
【单选题】听力原文:F: What I can't make out you is why you are so keen on the Layer-de-la-Haye house. Why on earth should we choose, actually choose, to live out in a village, even if it is a popular village. You k...
【单选题】According to Customs Law of China, declaration of import goods shall be made within( )days from the date of declaration of the arrival of the means of transport.
【判断题】According to Customs Law of China, declaration of import goods shall be made within 10 days from the date of declaration of the arrival of the means of transport.
【单选题】某 III 类水域经监测, COD 的浓度为 16.8mg/L , III 类水域 COD 对应的标准值为 20mg/L , COD 的指数为()
【单选题】在单相桥式整流电路中,若电源变压器二次电压有效值为100V,则负载电压为( )。
【单选题】在单相桥式整流电路中,若电源变压器二次电压有效值为 100V ,则负载电压为 V 。
【单选题】把一个0.1H的电感连接到50HZ,10V的正弦电源上,电流的有效值为()。