血友病乙输血宜选（）
A.冷沉淀输注
B.凝血酶原复合物
C.两者均可
D.两者均否
参考答案：B
Lucy is different from her twin sister. She likes dancing, _____ her sister is interested in reading. [ ]
A. so
B. or
C. but
D. and
在水、电、气、NH3都具备的情况下化工投料还应具备哪些条件？
