去公园寻找景点,应该查找什么地图?
A 交通图 B 地形图 C 世界政治地图 D 导游图
答案:D
导游图能帮助我们找到游览点的位置,选择游览的路线,所以本题应选D。
________ the arrival of the police, I would have been robbed by two masked men.
A.Had it not been for
B.If it were not for
C.Had it been not for
D.If it would not be for
在波剖面上,具有极大正位移的点称为()。
A.波谷
B.波数
C.波峰
D.波长