将一枚硬币连续掷两次,两次都出现正面朝上的可能性是______.
1÷4=14;
答:两次都出现正面朝上的可能性是14;
故答案为:14.
---My hobby is old coins, what about you?
---In my free time, I like in the park.
A.collected; painting
B.collects; to paint
C.collecting; to paint
D.collect; painting
复发性疝多用以下哪种方法修复( )
A.单纯疝囊高位结扎术B.Ferguson疝修补术C.Bassini疝修补术D.McVay疝修补术E.以上方法均可