给酒精灯内添加酒精时,添加的酒精的体积不应超过酒精灯体积的( )
A:13
B:23
C:12
D:14
培养皿编号
种子数量(粒)
种子所处环境(其他条件均适宜且相同)
A
20
培养皿底部有湿润的滤纸或纱布,20 ℃
B
培养皿底部有干燥的滤纸或纱布,20 ℃
C
培养皿底部有湿润的滤纸或纱布,-10 ℃
D
水淹没种子,20 ℃
—Yes. Though it's a little expensive, it really has good quality.