下列制冷剂中， ____属于非共沸混合物。
A、R134AC
暂无解析
Mymotherwasdeterminedtohelpthoseinneedandshewouldhavebeenimmenselyproudofwhathasbeenachievedtheselast20years.Theitalicizedpartinthesentenceexpresses_______.
Theoldmanshouldbetreatedwith____.
Mr.Greenisusedto_________twoapplesafterluncheveryday.
Shehiredalawyertoinvestigate,onlytolearnthatGabrielhadremovedhernamefromthedeed.Theinfinitiveverbphrase“onlytolearn”isused____.
Mrs.Whitehas_____thatsheisnotabletogetajob.
