【单选题】______ she wondered if she had made a mistake.
A.
Not until long afterwards that
B.
Not long until afterwards
C.
It was not until long afterwards that
D.
It was long afterwards until
【判断题】( )变速器第一轴的轴向间隙不大于0.15mm,其他各轴的轴向间隙不大于0.20mm。
【多选题】标题的拟定采取关键词组合,以下说法正确的是( )
B.
单一的关键词,在提升文案搜索曝光量上,比组合关键词效果好
C.
单一的关键词,在提升文案搜索曝光量上,远不如组合关键词
【判断题】2]用电位滴定法测定硫酸亚铁铵中亚铁离子浓度时.加入的混合酸是由盐酸和磷 酸制成的。( )
【判断题】变速器第一轴的轴向间隙不大于0.15mm,其它各轴的轴向间隙不大于0.20mm。
【单选题】She wondered if she could have the opportunity to
A.
end here so that she could learn more about the city .
【判断题】变速器第一轴的轴向间隙不大于0.15mm,其它各轴的轴向间隙不大于0.20mm。