正常淋巴结大小()。
A.0.2~0.5cm
B.0.6~0.8cm
C.0.9~1.2cm
D.1.3~1.5cm
E.1.6~1.9cm
参考答案:A
“检疫性有害生物”一词在检疫证书中通常写为()
A.injurious pests
B.quarantine pests
C.important pests
D.serious pests
肿瘤干细胞