In order to market responsibly, the author suggests that businesses______.
A. obtain permission first
B. cut down on the number of e-mails
C. only send e-mail to existing customers
D. do not use advertisements through e-mail
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该患者不宜选用的降糖药物是
A. 胰岛素
B. 阿卡波糖
C. 格列喹酮
D. 二甲双胍
E. 格列齐特
常用于手术器械灭菌的是
A. 巴氏消毒法
B. 高压蒸气灭菌法
C. 干烤法
D. 紫外线照射
E. 滤过除菌
The general use of the term "spare" in this text refers to______.
A. any unwanted e-mail
B. any untargeted e-mail
C. any unsolicited e-mail
D. any targeted e-mail
静息状态下K+由细胞内向膜外扩散的机制是
A. 单纯扩散
B. 以通道为中介的易化扩散
C. 以载体为中介的易化扩散
D. 主动转运
E. 胞吐