两种
如图,光在空气、玻璃两种媒质界面上发生反射和折射.入射光线应是____;反射光线应是____;折射光线应是____;介质1应是____介质,介质Ⅱ是____介质.
如图,光在空气、玻璃两种媒质界面上发生反射和折射.入射光线应是\_\_\_\_;反射光线应是\_\_\_\_;折射光线应是\_\_\_\_;介质1应是\_\_\_\_介质,介质Ⅱ是\_\_\_\_介质.
下列化肥:①KNO3;②KH2PO4;③过磷酸钙;④尿素;⑤(NH4)3PO4属于复合肥料的是( )
下列化肥:①KNO3;②KH2PO4;③过磷酸钙;④尿素;⑤(NH4)3PO4属于复合肥料的是( )
抗日战争胜利后,某些民主党派的领导人物曾经鼓吹“中间路线”。中间路线的鼓吹者主张( )。
抗日战争胜利后,某些民主党派的领导人物曾经鼓吹“中间路线”。中间路线的鼓吹者主张( )。
It took us quite a long time to get to the amusement park. It was _____ journey.
It took us quite a long time to get to the amusement park. It was \_\_\_\__ journey.