乳腺良性与恶性肿物的超声显示鉴别点是() A.边界是否光滑、完整 B.内部是否回声衰 发布时间:2017-06-08 11:28 │ 来源:www.tikuol.com 题型:单项选择题 问题: 乳腺良性与恶性肿物的超声显示鉴别点是()A.边界是否光滑、完整B.内部是否回声衰减C.后方是否回声衰减D.皮肤是否受侵犯E.以上都是
题型:单项选择题 In commodity trading, the exchange removes any daily losses from a trader's account and acids any gains to the trader's account. This process is known as :A.A. initial margin. B.B. maintenance margin. C.C. marking to market. 查看答案