【多选题】关于非稳态导热,下列说法正确的是()。
A.
忽略物体内部导热热阻的分析方法称为集总参数法。
【简答题】阅读理解。 This is a book. It's an English book. It is my English book. That is a dictionary. Is it Lucy's dictionary? No, it isn't. It's Tom's dictionary. Her dictionary is in her bag. Look! What are thes...
【简答题】Whose pens are these? _______ (their) are ______ (we).
【判断题】丙类谐振放大器中,失谐后管耗会显著中增大,有可能损坏功率管( )
【简答题】Whose pens are these? They are ________(they).
【判断题】丙类谐振放大器中,失谐后管耗会显著增大,有可能损坏功率管( )
【判断题】丙类谐振功率放大器中,失谐后管耗会显著增大,有可能损坏功率管。( )