【单选题】a. 주말마다 서울 여기저기를 다닙니다 . b. 찰리 씨는 서울에 사는 외국인입니다 . c. 왜냐하면 지하철을 편리하기 때문입니다 . d. 서울 구경을 할 때는 주로 지하철을 탑니다 .
【单选题】在酮的拜耳-维利格(Baeyer-Villiger)氧化反应中,下列最易发生迁移的基团是()
【单选题】The shop promised its customers that it would never sell fake goods, and sure enough it did so.
A.
这家商店向顾客发誓,决不出售假货,并且足够的证据确信它是这样做的。
B.
这家商店的顾客发誓,它没卖过假货,并且有足够的证据表明是这样。
C.
这家商店向顾客允诺不卖假货,而且它确实这样做了。
D.
这家商店向顾客允诺决不卖假货,而且它确实做到了。
【单选题】In which of the following types of power based on personality and individual differences would you find a person characterized by beliefs that power is distributed relatively equally across various gr...
【单选题】What kind of power based on personality and individual differences would you find a person characterized by beliefs that power is distributed relatively equally across various groups._____
【判断题】热液、化学烧伤,应立即脱掉被浸湿的衣服,可以冷水冲淋后剪开取下,强力剥脱易撕脱水疱皮,迅速用大量清水冲洗创面,或浸泡在冷水中,即可减痛,带走余热,又可以稀释和除去创面上存留的化学物质。( )
【单选题】Baeyer-Villiger反应是酮在过氧化物作用下生成
【判断题】酮羰基被过酸氧化为酯的反应称为Baeyer-Villlger反应
【单选题】字符液晶读操作时RS为( )表示指令操作。