既可作为独立客房出售，也可作为套间出租，灵活性较大的客房类型特指（）套间。
A、普通
B、商务
C、双层
D、连接
参考答案：D
Little Tom admitted ______ in the examination, ______ the teacher his word that he wouldn't do that again. [ ]
A. to cheat; to give
B. cheating; kept
C. to have cheated; keeping
D. having cheated; giving
汽化器式发动机气门同开角不能过大，主要因为（）.
A.浪费燃油，过贫油时还易出现汽化器回火
B.减少进气量，减小发动机功率
C.废气排除过量，影响发动机工作
D.影响发动机的压缩比
