有功功率反映的是交换的能量,无功功率反映的是消耗的能量。
参考答案:错
阅读短文,判断正(T)误(F)。
A happy family
It's a Saturday morning. The Brown family are in a park. Mr Brown sits on a bench with his wife. They
are talking and drinking. Tom is their son. He is thirteen years old. He is reading a book under a big tree. Kate is
Tom's little sister. She is only five. She is playing with her cat. It is a happy family.
( ) 1. There are four people in the Brown family.
( ) 2. The Brown family are in a park.
( ) 3. Mr and Mrs Brown sit on the grass.
( ) 4. Tom is playing with his friends.
( ) 5. Kate is playing with her cat.
灌注鼻饲液的适宜温度为()
A.30~33℃
B.32~35℃
C.33~36℃
D.36~38℃
E.38~40℃