呼吸道黏膜杯状细胞和黏液腺每日分泌黏液量为()。
A.5ml
B.10ml
C.20ml
D.50ml
E.100ml
参考答案:B
发电机有哪些主要保护?
The dress of this kind doesn’t suit me.Would you please show me ______ one?
A.some
B.another
C.any
D.the other