题型:选择题 I really appreciate their ________ you ________ after me while I was ill.A.to have; lookingB.having; lookC.having; looking D.to have; look 查看答案
题型:单项选择题 A1型题 某男性,在粮库从事粮食烘干工作,工龄25年,近日感觉视物不清,检查证实患有白内障,如与职业有关,则其最可能暴露的射频辐射波段是()A.超短波B.短波C.长波D.中波E.微波 查看答案