编人特别旅客快车、快速旅客列车、旅客快车的客车，应装有（）装置。

动态风险

柱与梁相交时，应在柱模上端的梁柱相交处开缺口，缺口高度和宽度分别（）梁高和梁宽。

A、大于

B、小于

C、等于

D、不大于

根据《广州市建设工程招标投标管理办法》，招标人可以要求投标人具备在广州地区完成过质量合格的类似工程业绩。类似工程是指招标项目所需企业资质级别（）资质能承接的工程。

A.最高级

B.低一级

C.二级

D.三级

下列哪项不是逆行肾盂造影的禁忌证（）

A. * * 狭窄

B.严重的肾结核

C.泌 * * 急性炎症

D.全身情况衰竭者

E.严重血尿和肾绞痛

American higher education stands on the brink of chaos.
Never have so many spent so long learning so little. The present
crisis stems from the increasing widespread acceptance among62．______
faculty and administrators of the fatal educational principle
which a student should not be required to do any academic work 63．______
that displeases him. If a student prefers not to study science or history
or literature, he has allowed to attain his degree without studying any 64．______
science, history, or literature.
In America the attempt is being made to provide students
with what is advised as a liberal education without requiring by them 65．______
the necessary self-discipline and hard work. Students have been led to
believe they can achieve without effort, that all they need to do is skip
light-heartedly down the merry road to learning. Fortunately, that road 66．______
is no more than a detour (弯路) to the dead end of ignorance.
we must realize that becoming an educated person is a
difficult, demanded enterprise. Just as anyone who regards intense 67．______
physical training as a source of delight would be thought a fool, for
we all know how much pain such training involves, but anyone who68．______
speaks intense mental exertion as a source of joy ought to be thought 69．______
equally foolish, for such effort also involves pain. It is painful to have
one’s ignorance exposing and frustrating to be baffled by intellectual 70．______
subtleties. Of course, there can be joy in learning as there can be in sport.
But in both cases a joy is the result of overcoming challenges and can’t71．______
be experienced without toil.