DVM线性误差在基本量程内测试，一般应均匀地选择检定点。
参考答案：对
Lucy is so kind that she often gives me a when I’m in trouble.
A．reply
B．seat
C．hand
D．help
A．小于40°
B．在50°~100°之间
C．在100°~140°之间
D．大于140°
