把一根木头锯成两段要用4分钟,如果锯成8段要用______分钟. 发布时间:2017-05-28 12:10 │ 来源:www.tikuol.com 题型:填空题 问题: 把一根木头锯成两段要用4分钟,如果锯成8段要用______分钟.
题型:填空题 —Do you think teenagers can drive?—I don't think teenagers should be allowed to drive, because they are ______. [ ]A. not enough serious B. not serious enoughC. enough serious D. serious enough 查看答案
题型:填空题 轮机部坞修,下列关于螺旋桨检查与修理的说法中,错误的是()。A.桨叶表面抛光B.测量螺距C.桨叶如有变形应予矫正和做动平衡试验D.如发现桨叶有裂纹和破损,需按螺旋桨修理标准进行焊补和修理 查看答案