【单选题】Take more care, you'll have an accident. [ ]
【单选题】If you ______ more than a week to take care of your baby in the hospital, ask the top manager for a leave.
【简答题】Safety first may mean a little more time and care, but it may save you a lot of trouble.
【简答题】电路如下图所示,试判断该电路中是否引入了反馈?若存在反馈,试指出反馈支路,并判断反馈的类型。设图中所有电容对交流信号均可视为短路。
【单选题】有关消化性溃疡穿孔的并发症,下列描述错误的是