【单选题】以下不属于理想的遗传标记特征的是( )
B.
共显性,即在杂合子中通过一定方法可以检测出两个等位基因存在
【简答题】__________ and ______________ are on the table. Children can __________ them. Keep knives in __________ and all cleaning liquids in _____________.
【单选题】To keep children safe , we put the things like knives and medicine away in our house.
【单选题】Keep your kids away from the _____ knives. They may cut themselves. [ ]
【判断题】CP0测量应使用标称精度不低于5mm+1ppm的双频GPS接收机
【多选题】传输媒体是用于将媒体从一处传送到另一处的物理载体,如()等。
【判断题】线绕电阻、热敏电阻、光敏电阻、压敏电阻属于可变电阻。
【单选题】To keep children safe, we put the things like knives away in our house.