【判断题】“一带一路”是共商共建共享的联动发展倡议,而非中国的对外援助计划。
【多选题】下面有关芯柱施工说法正确的是( )
B.
为保证芯柱混凝土密实,混凝土内宜掺增加流动性的外加剂
【单选题】We eat supper ___________ lunch. [ ]
【单选题】工商界是金砖国家经济发展的主力军,中方在今年5月成功主办“一带一路”国际合作高峰论坛,共建“一带一路”倡议不是地缘政治工具,而是()平台;不是对外援助计划,而是()的联动发展倡议。
【单选题】We usually eat ________ lunch at 12:30. [ ]
【判断题】The driver repeated that he should have kept in touch because he was very regretful.
【简答题】已知某一时期内某商品的需求函数为Q d =50-5P,供给函数为Q s =-10+5P。 ( 1 )求均衡价格P e ,和均衡数量Q e ,并作出几何图形 (2)假定供给函数不变,由于消费者的收入水平提高,需求函数变为Q d =60-5P求出相应的均衡价格 P e ,和均衡数量 Q e ,并作出几何图形。 (3)假定需求函数不变,由于生产技术水平提高,供给函数变为Q s =-5+5P。求出相应的均...
【单选题】Mr. Simpson stopped at the pedestrian crossing because
A.
the lighting was very good along the stretch.
B.
he was riding with two ladies at the moment.
C.
he wanted to ensure the safety of two passers-by.
D.
he was a new driver who tends to be cautious.
【多选题】下面有关芯柱施工说法正确的是( )
A.
应事先计算每个芯柱混凝土的用量,按计量浇筑混凝土