在内河水道中,转向参照点常采用()。①岸嘴②航标③岸上固定物标④横流,泡水等各种流态
A.①②③
B.②③④
C.①②④
D.①②③④
参考答案:D
根据句意和首字母在下列句子空白处填上合适的单词。
1. Broccoli, tomatoes and carrots are v________.
2. I have hamburgers for b________.
3. Peter likes ________ (play) basketball.
4. She doesn't like junk food she eats h________ food every day.
5. I have an ice c________, but I don't like French f________.
6. Zhou Jielun is a singing s________.
7. The little girl likes ________(strawberry) a lot.
8. They like ________(eat) hamburgers and carrots for lunch.
9. Chicken ________(be) very delicious.
10. I usually have some ________(tomato) in the basket.
如图所示,在纸面内放有一个条形磁铁和一个圆形线圈(位于磁铁正中央),下列情况中能使线圈中产生感应电流的是
A.将磁铁在纸面内向上平移
B.将磁铁在纸面内向右平移
C.将磁铁绕垂直纸面的轴转动
D.将磁铁的N极转向纸外,S极转向纸内