加热()试剂时,必须使用水浴、油浴、砂裕,或用电热套,绝不能用明火。
D
暂无解析
ApersonwiththebloodtypeABcan_____anytypeofblood.
Whattypesofsportsdoyoulikewatchingorplaying?(Why?)
Idon’tlikethishat.Pleaseshowme____.
Eldercareprogram
SASemploysafull-timeergonomicsspecialisttoselectofficefurniturethatwillreducephysicalstressandstrain.