皮皮学，免费搜题
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【多选题】
低温制冷方式包括:A.
相变制冷
B.
辐射制冷
C.
磁热制冷
D.
激光制冷
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】140÷2= 240÷6= 300÷6= 490÷7= 40÷4= 180÷3= 40×7= 0÷18=
【简答题】6÷______=0.375=______：40= 9 ( ) =______%
【简答题】S1:What shall we look at next?S2:We'll check the fixed fire fighting system in the engine room.Q:What are they going to check?A. Fire hoses on check. B. Fire mains on deck. C. Portable fire extinguish...
【简答题】______：40= 2 () =0.5=______%=6÷______．
【简答题】S1:What shall we look at next?S2:We'll check the portable fire extinguishers.Q:What are they going to check?A. Fire hoses on deck. B. Fire mains on deck. C. Portable fire extinguishers. D. Fixed fire ...
【简答题】利用钻时录井资料可以定性解释地下地层剖面。通常,钻遇含油砂岩时钻时___________,钻遇普通砂岩钻时___________,钻遇玄武岩、花岗岩钻时___________。
【简答题】S1:What's to be checked next?S2:We'll check the Ship Security Alert System.Q:What are they going to check?A. AIS. B. DOC. C. SSAS. D. SSP.
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