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【单选题】
两根长度相等、直径不等的圆轴承受相同的扭矩受扭后,轴表面上母线转过相同的角度。设直径大的轴和直径小的轴的横截面上的最大剪应力分别为τ1max 和τ 2 max ,剪切弹性模量分别为G1和G2。则 ( )A.
τ1max ＞τ2 max
B.
τ1max ＜τ2 max
C.
若G1＞G2，则有τ1max＞τ2 max
D.
若G1＞G2，则有τ1max＜τ2 max
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【简答题】We should be grateful if you wou]d give us further details of Chinese toys.
【单选题】The author's assertions concerning the conditions that lead to the decay of the vacuum would be most weakened if which of the following occurred?
A.
Scientists created an electric field next to a vacuum, but found that the electric field was not intense enough to create a charged vacuum.
B.
Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that no virtual particles were created in the vacuum's region of space.
C.
Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that they could not then detect any real particles in the vacuum's region of space.
D.
Scientists introduced a virtual electron and a virtual positron into a vacuum's region of space, but found that vacuum did not then fluctuate.
【单选题】The first step was to ______ the agency, with the expectation that competitive markets would then develop.
A.
abuse
B.
contradict
C.
abolish
D.
eliminate
【单选题】Despite their __________ of interest, Fleming kept trying to develop the chemical ___________ it would be safe and effective.
A.
lacking; in order to
B.
lack; so that
C.
lack; so as to
D.
lacking; so that
【简答题】We _____ a pleasant journeybut for the rain. A. wouldhave B. will have C. hadhad D.would have had
【单选题】The first English window was just a slit in the wall. (29) It was cut long, so that it would let in as much light as possible, and narrow, to keep out the bad weather. However, the slit let in more wi...
A.
large hole in the roof
B.
hole with canvas stretched across it
C.
long and narrow slit in the wall
D.
slit to let out the smoke from fires
【单选题】美术作为艺术的一种，它的基本表现方法是（），即创造某种具体可视之物代表与之同形的另一事物或意义，这点也是幼儿思维的典型特点。
A.
象征
B.
抽象
C.
形式
D.
灵动
【简答题】List 11 steps of international market research
【单选题】A) He suffered a nervous breakdown. B) He was wrongly diagnosed. C) He was seriously injured. D) He developed a strange disease.
A.
He suffered a nervous breakdown.
B.
He was wrongly diagnosed.
C.
He was seriously injured.
D.
He developed a strange disease.
【单选题】Jerry didn’t pay me back, but he promised that he _______________ this Sunday. A. must B. could C . wou ld D. s hould
A.
must
B.
could
C.
wou ld
D.
s hould
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