题目

After the new technique was introduced, the company produced _______ in 2017 as the year before. A . as twice many computers B . twice many as computers C . twice as many computers D . as many computers twice 答案：C 一次函数y＝mx＋n的图象如图所示，则下列结论正确的是 [　　] A．m＜0，n＜0 B．m＜0，n＞0 C．m＞0，n＞0 D．m＞0，n＜0