— Is this your book?
— ______. [ ]
A. Yes, this is
B. Yes, it is
C.Yes, she is
答案:B
下列哪一疾病不属于原发性单克隆丙种球蛋白病( )
A.艾滋病B.多发性骨髓瘤C.原发性巨球蛋白血症D.淀粉样变性E.重链病
加氢装置苛刻度提高后对装置的影响?