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【多选题】
涉及到职工权益的社会保险费以及其他相关的资金项目包括（）。A.
基本养老和补充养老保险费
B.
医疗保险费、失业保险费
C.
212伤保险费、生育保险费
D.
职工福利费、职工教育经费
E.
奖金、津贴和补贴
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皮皮学刷刷变学霸
举一反三
【单选题】The percentage of purchases on credit cards this year drops by______since 2007.
A.
31%
B.
42%
C.
45%
D.
56%
【单选题】Other commitments remain sparse despite the plan______since 2007.
A.
floated
B.
having been floated
C.
having floated
D.
was floated
【单选题】“Rubber Duck”,________ by Dutch artist Florentijn Hofman，has visited many cities since 2007．
A.
being created
B.
creating
C.
created
D.
having created
【单选题】They studied what ______ since 2007 and found Australian electricity prices were among the highest in the developed world.
A.
has happened
B.
happened
C.
had happened
D.
has been happening
【单选题】Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since 2007.
A.
to break out
B.
to have broken out
C.
to be broken out
D.
to have been broken out
【单选题】The word 'foolish' is too mild to describe your behavior, I would prefer the word ______.
A.
ideological
B.
idyllic
C.
idiotic
D.
idiomatic
【单选题】The world has been shaken by a huge financial crisis since 2007; thanks to each country’s powerful policies, the international trade is improving _________ day by day.
A.
in short
B.
in all
C.
in turn
D.
ingeneral
【简答题】焊前准备的几点要素,如装配间隙、钝边大小、反变形大小的确定。
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