【单选题】在进行三维定位中,至少需__________颗GPS卫星
【单选题】有机磷杀虫药的毒性按大鼠急性经口进入人体内的半数致死量(u‰)分为4类,下列哪一组为剧毒类( )
【判断题】敌百虫、 乐果、 马拉硫磷、辛硫磷、 甲拌磷、甲胺磷、 、 毒死蜱、 百菌清、灭多威属于 有机磷类农药 。
【单选题】What do you think of the latest TV play the Name of People? -It's very popular. Millions of families ____by it during that time. A. attracted B. are attracted C. were attracted D. were attracting
【简答题】A.amazed B.enticed C.captured D.attracted
【判断题】722-S分光光度计使用前需要预热20~30分钟。
【判断题】任意稿件的中心思想和提出的核心问题都能称之为主题。
【单选题】Do you have any shoes can match the dress?
【简答题】A.interested B.pleased C.attracted