【单选题】根据GB19344-2016《汽车维护检测诊断技术规范》,乘用车一级维护里程上限值为___________。
【单选题】Although all of the apples _______, none of them _______ good.
B.
have been tasted; are tasted
C.
have been tasted; taste
D.
have tasted; are tasted
【判断题】根据《汽车维护、检测、诊断技术规范》有关规定,汽车维护分为日常维护、一级维护、二级维护三种级别。
【单选题】梁在集中力作用的截面处,它的内力图为 。
【判断题】葡萄牙人在海外建立的只是一种“贸易帝国”,而不是殖民帝国。
【单选题】_____ good, the apples were soon sold out. [ ]
【单选题】梁在集中力作用的截面处,它的内力图为 。
【单选题】梁在集中力作用的截面处,它的内力图为:
B.
(C)剪力图变化,弯矩图不变 (D)剪力图和弯矩图都变化