A:0
B:1
C:
D:
— It is a large and beautiful campus with a 50-metre-long swimming pool.
下列不属于种子萌发所需的条件的是( )
从4台甲型和5台乙型电视机中任意取出3台,要求至少有甲型与乙型电视机各1台,则不同的取法共有( )