【单选题】设有三个角度观测值的权分别为3,4,6;则三角形内角和的权为( )。
【简答题】Many forms of social media involve interactive screen time that is ___________.
【判断题】若喷油器有滴漏或堵塞,会造成个别气缸工作不良,导致发动机怠速不稳。
【单选题】Many forms of etiquette are employed precisely to disguise those antipathies that arise from irreconcilable differences. (Para. 3)
A.
rules of polite behavior; strong dislikes
B.
directions for action; sharp disagreements
C.
words of advice; fundamental conflicts
D.
regulations of social activities; striking contrasts
【单选题】以画“兰竹”著名的扬州画派画家是( )。
【简答题】Social anxiety, in its many forms, is epidemic. About 40 percent of Americans think of themselves as shy, while only 20 percent say they have never suffered from shyness at some point in their lives. ...
【单选题】三角形观测的三个内角分别为45°22′00″、60°39′50″、73°58′16″,则角度闭合差为()秒。