新增、更新出租汽车的车型应当符合本市的规定,尾气排放应当符合()。
A、国家标准
B、国际标准
C、本市标准
参考答案:A
The students asked their monitor _______ have a picnic that weekend. [ ]
A. could they
B. if they could
C. if they can
D. where could they
变形缝按功能不同可分()。
A.伸缩缝
B.施工缝
C.沉降缝
D.分隔缝
E.防震缝