Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to tile talk, what did David Sarnoff predict about radios
A. They would get smaller in size.
B. Their signals would travel further.
C. They would become less popular than television.
D. They would be common household items.
[问题5] 电子邮件加密系统包括哪几个哪个是Internet标准
男性,35岁,右腹股沟肿块10年,站立时明显,平卧后消失,有时可降入阴囊,可还纳。 查体:右腹股沟肿块,手拳大小,可还纳腹腔,外环容3指,压迫内环后肿块未再出现。 该患者最可能的诊断为
A. 精索鞘膜积液
B. 股疝
C. 腹股沟直疝
D. 腹股沟斜疝
男,25岁,背部刀伤,伤口流血2小时,查体:神志尚清楚,诉口渴,皮肤苍白,稍冷,脉搏 110次/分,血压90/70mmHg,脉压小,表浅静脉塌陷,尿少。 应采取何种措施
A. 门诊观察
B. 胸部X线摄片
C. 输
D. 收住院手术治疗