Why did people get in a flap over nuclear energy?为什么人们对核能惶恐不安呢?Accidents occur in all fields; why not in nuclear energy production?不论什么领域里都有可能发生事故, 为什么核能生产就不会发生事故 呢 ?People tend to get overly emotional about nuclear ener...
After testing, this vaccine could be used to immunize individuals at high risk for SARS exposure.经过测试, 这种疫苗可用来免疫与SARS病毒接触的高危人群.OBJECTIVE To explore the administration measures of air condition usage in SARS epidemical pe...