凡有坡度的横管都应注出坡度，是用（）指向下坡方向。
A、三角符号
B、箭头符号
C、索引符号
D、文字标注
参考答案：B
下列哪项不属于扶正指导下确定的治法（）
A.滋阴
B.发汗
C.养血
D.益气
E.扶阳
Henry Ford was himself a（）mechanic and could build a car with his own hands.
A.bear
B.bore
C.born
D.bearing
