提高入塔氨含量可以提高氨净值。
参考答案：错
解析：提高入塔氨含量只能降低氨净值。
学校操场南北方向长120m，在图纸上的长度是40cm．这幅图纸的比例尺是多少？
His work was_____by his boss.
A．high thought
B．high thought of
C．good thought
D．well thought of
