工艺要求热熔胶的供胶装置加热温度一般设置在
C
暂无解析
Youmayusebike________yougiveitbacktometomorrowmorning
_______(safe)needstobeimprovedontherailwaysinthatcountry
Eachstudentistogiveashort___(speak)totherestoftheclassattheendofthesemester.
Weallknowaboutthe_____thatsmokingcandotoourhealth.
一质点在xy平面内运动，运动方程为r=2ti+(3t²+2)j，则该质点的运动轨迹是（）