【简答题】Would it _________________to close the refinery for a while?
【单选题】The birthplace of plastic is the oil refinery.
【单选题】Neighboring landholders: Air pollution from the giant aluminum refinery that has been built next to our land is killing our plants. Company spokesperson: The refinery is not to blame, since our study ...
A.
The study did not measure the quantity of pollutants emitted into the surrounding air by the aluminum refinery.
B.
The neighboring landholders have made no change in the way they take care of their plants.
C.
Air pollution from the refinery has changed the chemical balance in the plants' environment, allowing the harmful insects and fungi to thrive.
D.
Pollutants that are invisible and odorless are emitted into the surrounding air by the refinery.
E.
The various species of insects and fungi mentioned in the study have been occasionally found in the locality during the past hundred years.
【单选题】已知函数 f(x)= - x 2 +6x+ e 2 -5e-2,x∈(-∞,e] x-2lnx,,x∈(e,+∞) ,若f(6-a 2 )>f(a)则实数a的取值范围是( )
【单选题】Would it be an idea to close the refinery for a while?
A.
Putting forward proposals
B.
Disagreeing indirectly
D.
Avoiding making decisions
【单选题】Teachers, train drivers, oil refinery workers and other French employees have _____to strike in protest of President Sarkozy’s pension (养老金) reforms.
【简答题】因式分 (f)3x e -6xy+x; (e)-左m 3 +f6m e -e8m; (3)f8(a-7) e -fe(7-a) 3 .