【简答题】已知 ∈( , ),sin = ,则tan2 =_________
【单选题】Which of the following is not long term-assets?
D.
inventory for the retailer
【判断题】Return on assets reflects the effectiveness of a company’s ability to generate profit through productive use of its assets.
【简答题】已知 a ∈( , ), sinα = ,则 tan2α =
【简答题】安全气囊系统的线束安全装置有__________、____________、___________和_____________。
【简答题】若 =2013,则 +tan2α=________.