[单选] 一般车用汽油发动机的扭矩储备系数为（）。

收入资本化法 防止电气火灾的措施有哪些？ Telepresence and video conferencing have been an increasingly important component of the overall collaboration marker, which indicator is the best measure of the continued importance of these technologies going forward?（） generation Y ,raised on video, comprises 17 percent of the world population。 the annual growth rate of the video-conferencing market is 23 percent。 the U.S internet traffic annual growth rate is more than 40 percent。 thecisco long-term growth-rate target is 12 percent to 17 percent。 生态系统服务功能价值的特征是什么？ 固溶强化 一般车用汽油发动机的扭矩储备系数为（）。