在航路下降时,推力和俯仰姿态不变,当皮托系统的混合空气进气道和排水管由于结冰完全堵塞时,空速指示器所指示的速度将().
A.变大
B.变小
C.同结冰前相同
参考答案:B
实验中如果结果和假设不符合,正确的处理方法是( )
A.修改结果,使其与假设相符
B.依据实验结果下结论
C.修改实验过程,使其与假设相符
D.修改假设,重新做试验
根据句意,用括号中所给单词的适当形式填空,每空一词。
小题1:Jim fell down from the tree yesterday. Luckily, he didn’t hurt (he).
小题2:— When is Teachers’ Day, do you know?
—Sure! It’s in the (nine) month of a year.
小题3:The sun shines brightly in the sky. It,s a (sun) day today.
小题4:Mom is busy cooking in the kitchen. She,s (prepare) a cake for my birthday party.
小题5:In fall, (leaf) fall down from the trees. The cold weather is coming.