【单选题】对一平行—连串反应 ,P为目的产物,若活化能次序为:E2〈E1〈E3,为了目的产物的收率最大,最佳操作温度序列为()。
【单选题】According to Paragraph 5, which of the following is most likely to be the best explanation of 'continuing education'?
A.
Continuing education means more than just certification.
B.
Continuing education orientates you to a better career.
C.
Continuing education helps in more than just one way.
D.
Continuing education motivates you to a higher position.
【单选题】According to the explanation given in the passage, which of the following causes superbubbles to gradually assume the shape of a chimney?
A.
The gravitational attraction of supernovas adjacent to the region of the chimney's formation
B.
The effect of entropy on the relative abundance of hot interior gas within the superbubble
C.
A chemical reaction involving ionized trace ions at the heart of the superbubble
D.
A tendency toward coalescence in the gases that contribute to the formation of the superbubble
E.
A natural buoyancy of the superbubble, which causes the chimney to stretch and become a gaseous conduit
【单选题】If we ban SUVs because they are bad for the environment, eventually the government will ban all cars, so we should not ban SUVs.
B.
Post hoc, ergo propter hoc
【单选题】草履虫靠是靠哪个细胞器来维持体内的渗透压
【单选题】What is the author's attitude in this article?
A.
We should ban the fireworks in all states in US.
B.
Children can easily been injured in fireworks display.
C.
Americans should enjoy the freedom of using fireworks as much as they like.
D.
US government should not totally ban the firework market, but better regulate it.
【单选题】对一平行—连串反应 P 为目的产物,若活化能次序为: E2 ,为了目的产物的收率最大,则最佳操作温度序列为( )。
【简答题】以下哪些犯罪中,时间、地点或者方法是犯罪构成客观方面的必要因素?( )
【单选题】Which of the following does not seem to be an explanation of the great demand for college education in America?
A.
The parents have realized that higher education means a higher standard of living.
B.
A high-school education is not 'high' enough for most occupations.
C.
A great need has been developed for many varieties of specialists.
D.
High schools concentrate mainly on preparing students for colleges.