湿式电解质分析仪中为各种试剂流动提供动力的是()
A.三通阀
B.蠕动泵
C.真空泵
D.吸样器
E.微机系统
参考答案:B
Nowadays, an increasing number of people have ___________ to the information they need through the Internet.
A.appeal
B.access
C.assess
D.application
慢性宫颈炎出现腰骶部疼痛时说明()
A.乳突状糜烂
B.重度糜烂
C.炎症扩散到盆腔
D.宫颈息肉
E.宫颈腺体囊肿形成