【简答题】ch6 证明:若关系R是BCNF关系模式,则R是3NF关系模式。
【单选题】— Who is ____ the TV show? She seems to be talented. — Mary Green, who used to be a great actress.
【单选题】《旅游法》规定,由于公共交通经营者的原因造成旅游者人身损害.财产损失的,应承担赔偿责任的是____。
A.
地接社,地接社承担责任后可以向公共交通经营者追偿
D.
公共交通经营者,旅行社应当协助旅游者向公共交通经营者索赔
【单选题】Who are the kinds of reporters the writer seems to admire most?
A.
Reporters who know how to sift through a lot of information.
B.
Reporters who are willing to sacrifice to chase after a story.
C.
Reporters who won't sully themselves.
D.
Reporters who are highly trained.
【单选题】有一溶液,遵守 Lambert-Beer 定律,在 280nm 处,当浓度为 c 时,测得吸光度为 A,当其浓度分别为下列几种情况时,透光率最大的浓度是
【单选题】有一溶液,遵守 Lambert-Beer 定律,在 280nm 处,当浓度为 c 时,测得吸收度为 A, 当其浓度分别为下列几种情况时,透光率最大的浓度是( )。
【简答题】Mary is the kind of person who always seems to be ______ a hurry. A) on B) in C) with D) for
【简答题】There’s a man at the reception desk who seems very angry and I think he means____ trouble. A) B) to make C) to have made D) having make
【单选题】有一溶液,遵守 Lambert-Beer 定律,在 280nm 处,当浓度为 c 时,测得吸光度为 A,当其浓度分别为下列几种情况时,透光率最大的浓度是
【单选题】On the issue of who should be included in the DNB, the writer seems to suggest that ______.
A.
the editors had clear rules to follow
B.
there were too many criminals in the entries
C.
the editors clearly favoured benefactors
D.
the editors were irrational in their choices