如图所示,工厂为了搬运一个笨重的机器进车间,某工人设计了下图所示的四种方案(机器下方的小圆表示并排放置的圆型钢管的截面),其中最省力的方案是[ ]
A、
B、
C、
D、
答案:C
Although chatting on line has exploded in popularity in recent years, there is no ________ for a face-to-face conversation.
A.privilege
B.affection
C.substitute
D.adjustment
下列不属于以"扶正"治则为指导确定的治法是()
A.发汗
B.滋阴
C.扶阳
D.益气
E.养血