______÷8=14…6;72是6的______倍;45的3倍是______.
①14×8+6=118;
②72÷6=12;
③45×3=135,
故答案为:118;12;135.
下列现象中,属于光的折射现象的是( )
A.通过潜望镜看到海上的船只
B.小孔成像
C.在平静的水面上看到岸边青山的倒影
D.从岸上看,游泳池底好像变浅了
The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means().
A.displacement
B.fumigation
C.discharging
D.compensation