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【单选题】
设向量组α1，α2，α3线性无关，则下列向量组中线性无关的是A.
α1＋α2，α2＋α3，α3－α1．
B.
α1＋α2，α2＋α3，α1＋2α2＋α3．
C.
α1＋2α2，2α2＋3α3，3α3＋α1．
D.
α1＋α2＋α3，2α1－3α2＋2α3，3α1＋5α2－5α3．
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【单选题】You should be directly ______ with this issue to make an accurate report of it.
A.
informed
B.
notified
C.
acquainted
D.
enlightened
【单选题】In paragraph 5, why does the author use the sentence, 'Code switching occurs between people who share more than one common language however, it can also occur between people, who share a language and ...
A.
To make a transition.
B.
To summarize an idea.
C.
To give an example.
D.
To start a conclusion.
【简答题】分项工程如何组织验收?
【单选题】One example of code switching is .
A.
teenagers change their attitudes when in front of their parents or in front of their friends
B.
people use one dialect at home and then another at work
C.
teenagers use formal English in writing but informal language in speaking
【单选题】The character mode sales report is stored on the network drive as a .REX. You need to make changes to the report layout. Using the report builder how would you change this file?（）
A.
Open the file using the menu option file->open make the changes and recompile the report.
B.
Convert the file into .REP file using the report compiler make the changes and convert the file back to a .REX file.
C.
Execute the R30CONV command to convert the file to a .RDF file, make the changes and convert the file back to a .REX file.
D.
Choose file -> administration->compile. Convert the file to a .REP file, make the changes and convert the file back to a .REX file.
E.
Execute the R30CONV command to convert the file to a .REP file, make the changes and convert the file back to a .REX file.
【多选题】关于我国宪法的地位,表述正确的有
A.
我国宪法是国家的根本法，是治国安邦的总章程
B.
是党和人民意志的集中体现
C.
我国宪法是国家各项制度和法律法规的总依据
D.
我国宪法规定了国家的根本制度
【简答题】该钢筋分项工程质量验收的内容包括哪些 2．该基础工程的验收内容有哪些如何组织验收基础工程质量 3．对该工程2层柱子的质量应如何验收
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