年薪制的特点是什么？
（）是中国境内所知最早的原始人类。 ["元谋人","北京人","山顶洞人","河姆渡人"]
A person with diabetes has received a minor leg injured. The symptoms of the onset of a diabetic coma include（）. ["reduced appetite and thirst","sneezing and coughing","only a low grade fever","slurred speech and loss of coordinatio"]
以下不属于个人住房贷款贷前调查人必须调查的材料是（） ["借款申请人偿还能力证明","首付款证明","担保材料","借款人子女的信用报告"]
当时文艺复兴时期的中心是在（） ["A.意大利的罗马","B.意大利的佛罗伦萨","C.法国巴黎","D.希腊的雅典"]
变频器如何进行维修保养？
