金黄色葡萄球菌可导致严重的败血症,其产生的酶和毒素有()
A.肠毒素和红疹毒素
B.杀白细胞素
C.血浆凝固酶
D.以上均是
E.α-溶血毒素
参考答案:D
She looked at us sadly with her eyes open as large as ________.
A.her sister
B.her sister’s
C.her sisters’
D.that of her sister
尿素熔融泵在生产中进口液位高,尿液停留时间延长,成品中缩二脲含量增加。