【单选题】By using the example of Galileo, the author intends to reveal that
A.
objectivity is essential to scientific research.
B.
hypothesis is based on careful observation.
C.
creativeness plays an important part in scientific research.
D.
observation is the only factor determining scientific research.
【单选题】刘先生,某公司职员,每次驾车时都注意使用安全带,该行为属于促进健康行为中的( )
【判断题】基站勘察测量各类线缆长度时,应该考虑留有余量。
【判断题】目前, RFID 系统的安全问题已成为制约 RFID 技术推广应用的主要因素之一。
【简答题】What should the tourists do to avoid illness during the trip? They should take some essential ______.
【判断题】机油压力表在发动机正常工作情况下应指示在200~400kPa之间。
【单选题】关于肥胖症,下列叙述哪项不正确
E.
按身高测体重,超过标准体重的平均值20%以上