WAP的运作模式须具备三大组件,包括下列哪些?()
A.客户端
B.WAP网关(WAP Gateway)
C.WAP HTML
D.Origin Server
参考答案:A, B, D
As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.[ ]
A.before
B.unless
C.since
D.until
女性,35岁,因重度甲状腺功能亢进(简称甲亢)入院,择期手术治疗。在术前准备期间,患者害怕手术,焦虑不安。
为了抑制甲状腺素的释放,减少甲状腺血供,术前常用下列哪种药物()
A.普萘洛尔
B.苯巴比妥
C.甲状腺素
D.复方碘化钾
E.硫氧嘧啶