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【单选题】
关于数据组织的维度，以下选项中描述错误的是A.
数据组织存在维度，字典类型用于表示一维和二维数据
B.
数据由键值对类型的数据构成，采用对象方式组织
C.
一维数据采用线性方式组织，对应于数学中的数组和集合等概念
D.
二维数据采用表格方式组织，对应于数学中的矩阵
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【简答题】Canadian cattle ranchers once advertised the safety of Canadian beef by hosting ______.
【多选题】下列论述正确的有（ ）
A.
内燃机的压缩比是指气缸工作容积与燃烧室容积之比
B.
柴油机采用增压器，只能增加进气量，改善排放，不能提高发动机功率
C.
8E430Z型柴油机是一台八缸、二冲程、缸径为430mm,并具有增压特性的柴油机
D.
柴油机燃料供给系统的作用是定时、定量、定压地向燃烧室喷入柴油，并创造良好的燃烧条件
E.
一般汽油机比柴油机的转速高是因为汽油机的压缩比较大
【单选题】When the writer told an ex-colleague about the man in the park, the ex-colleague ______ .
A.
said that Rogers was a company director
B.
said he was sure Rogers was still in prison
C.
didn' t know anything about Rogers
D.
seemed to think the man might have been Rogers
【单选题】Which is the proper sequence (顺序) to introduce an elderly, your boss,a junior colleague and a senior colleague to each other?
A.
an elderly--your boss-- senior colleague-- junior colleague
B.
your boss--an elderly-- senior colleague-- junior colleague
C.
your boss-- junior colleague--an elderly-- senior colleague
D.
an elderly--your boss-- junior colleague-- senior colleague
【单选题】What made Janet wary about the new colleague with the loose lips?
A.
Her new colleague thought she is a newbie.
B.
Her new colleague gave her an earful of all the personal lives and backstories of their work group even if they didn’t know her.
C.
Her new colleague would like to recruit her.
D.
Her new colleague told her secrets of the company.
【单选题】which is the proper sequence (顺序) to introduce an elderly, your boss,a junior colleague and a senior colleague to each other?
A.
an elderly--your boss-- senior colleague-- junior colleague
B.
your boss--an elderly-- senior colleague-- junior colleague
C.
your boss-- junior colleague--an elderly-- senior colleague
D.
an elderly--your boss-- junior colleague-- senior colleague
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