【单选题】What does the man inquire about?
【单选题】How would you like to save 50% on a rental car? Contact National Car Rental today! You pay just half the usual rate on weekend rentals of compact cars. What a deal! But you have to hurry! This special...
【简答题】比较下列各组聚合物的Tg高低并说明理由: (1)聚二甲基硅氧烷,顺式聚1,4-丁二烯; (2)聚己二酸乙二醇酯,聚对苯二甲酸乙二醇酯; (3)聚丙烯,聚4-甲基-1-戊烯; (4)聚氯乙烯,聚偏二氯乙烯。
【简答题】比较下列各组中聚合物在分子量大致相同情况下Tg的高低顺序,并简要说明理由。 (1)聚丙烯,聚氯乙烯,聚丙烯腈,聚异丁烯; (2)聚二甲基硅氧烷,聚1,4一丁二烯,聚乙烯,聚乙炔; (3)聚丙烯,聚苯乙烯,聚对氯苯乙烯,聚对氰基苯乙烯; (4)聚己二酸己二酯,聚己二酰己二胺,聚对苯二甲酰己二胺。
【简答题】比较下列各组中聚合物在分子量大致相同情况下T g 的高低顺序,并简要说明理由。
【单选题】The author seems to be mainly concerned with
A.
the mainstream rental-car companies.
B.
the exotic rental-car companies.
C.
luxury-car rental business.
【简答题】遗传决定了幼儿生长发育的( )性,环境决定了幼儿生长发育的( )性,幼儿的生长发育就是个体的( )因素与( )因素相互作用的过程。
【简答题】资本的实际租赁物价(real rental price of capital)
【单选题】What does Mary want to know about the rental car?
A.
whether it can be delivered to and picked up from the hotel
B.
the total cost of the rental car
【单选题】Whichone is equivalent to“car rental”?