【单选题】电缆线路的电缆按其结构可分为6部分,其中不包括 ___( )___
【单选题】立钻 二级保养,要按需要拆洗电机,更换1 号钙基润滑脂。
【判断题】Generally speaking, in an abstract, the opening and concluding statements are written in the present tense or the present perfect tense, while the methods and results are expressed in the past tense.
【多选题】what elements are not the indispensable ones in an abstract
B.
background information
【判断题】An abstract should reflect correctly the objectives and contents of the article. Do not include information that does not appear in the body of the article in the abstract.
【判断题】Generally speaking, in an abstract, the opening and concluding statements are written in the present tense or the present perfect tense, while the methods and results are expressed in the past tense.
【单选题】立钻电动机二级保养要按需要拆洗电机,更换 润滑剂。
【单选题】Which of the following parts is not listed as the moves in an abstract?
【判断题】References can usually be contained in an abstract because the abstract aims to distil the unique contribution of the current paper. ( )
【多选题】What are the important elements in an abstract?