游泳比赛出发招回线必须横跨游泳池并缚在离出发池端多少米处的固定柱子上()
A.20米
B.15米
C.10米
D.5米
参考答案:B
根据句意和首字母提示补全单词。
1. Peter comes to visit his grandparents s_______.
2. Tigers are kind of d_______.
3. Let's go o_______ take a walk.
4. The bus s_______ is across from the hotel.
5. The reporter works for a n_______.
同步电机的额定容量为20MVA,同步电机的超瞬变电抗百分数为12.21,基准容量取100MVA,同步电机的电抗标幺值为( )。
A.0.006.
B.0.611.
C.1.638.
D.0.016