交叉抗药性
参考答案:
解析:病原微生物对某一种化疗药物产生抗药性后,对其它化疗药物也同样具有抗药性,此种现象称为交叉抗药性。
Dr Yuan Longping grows ________ is called super hybrid rice, _________ has a high output.
A.what; which
B.that; what
C.that; which
D.what; what
结核菌素试验强阳性反应结果为()
A.红晕直径>10mm
B.红晕直径>15mm
C.硬结直径>15mm
D.硬结直径>12mm
E.硬结直径>20mm