【简答题】根据 汉语提示用适当的介词 完成句子。 1. The hospital is ______ ( 在......旁边) the park. 2. The lab is ______of ( 在......左边) the computer room. 3. T om is tall in his class. He sits ______ ( 在 ...... 后面 ) the classroom. ...
【判断题】抗爆性是指汽油在发动机气缸中燃烧时,避免产生爆燃的能力,亦即抗自燃能力。一般用辛烷值表示。辛烷值愈高,抗爆性愈好。选择汽油牌号的主要根据是发动机压缩比的高低,显然,压缩比愈高,相应选择的汽油牌号愈高。
【判断题】辛烷值是表示汽油在汽油机中燃烧时的抗震性指标。
【简答题】二、用适当的介词完成句子(注意每空一个答案) 1.The girl ___ a red dress is my sister,and the red dress looks beautiful ____ her. 2.Everybody was touched ___ words after they heard her moving story. 3.She found some good-qu...
【简答题】根据提示用适当的介词完成句子。 1.—Where are my books? —They're o________ the sofa. 2.—Where is your pen? —It's i________ the pencil case. 3.—Where are my shoes? —They're u________ the bed. 4.—Where is my cat? —It's ...
【简答题】用适当的介词完成句子。 A. in B. on C. for D. from E. to You can see some students playing football ______ the playground. Greetings ______ Beijing, China. There are a great many books ______ the school libra...
【判断题】辛烷值是标志汽油抗宝性能的重要指标,抗爆性是表示汽油燃烧性能的指标。
【判断题】抗爆性是指汽油燃烧时不致发生爆振的性能,辛烷值是表示汽油抗爆性能的主要指标。汽油的牌号以辛烷值大小划分。
【单选题】国内外药典关于吩噻嗪类药物及盐酸盐原料药的含量测定常采用的方法是( )
【单选题】一个商品价格下降对互补品最直接的影响是( )