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【单选题】
函数 在点 处间断是因为_________.A.
在点 处无定义
B.
左极限 和右极限 都不存在
C.
不存在
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皮皮学刷刷变学霸
举一反三
【多选题】下列关于板式橡胶支座说法正确的是（ ）。
A.
由几层橡胶和薄钢片叠合而成。
B.
利用橡胶的不均匀弹性压缩实现转角 。
C.
利用其剪切变形实现微量水平位移 。
D.
具有足够的竖向刚度。
E.
能将上部结构的反力可靠地传递给墩台。
F.
一般不分固定支座和活动支座
G.
正交桥梁一般采用圆形支座
【简答题】“是以圣人常善救人，故无弃人；常善救物，故无弃物”给予后世管理者的智慧启示是（ ）（ ）。（选二）
【简答题】梁式桥的支座一般可分成____和____两种。
【单选题】GDP
A.
a. is used to monitor the performance of the overall economy but is not the single best measure of a society’s economic well-being.
B.
b. is used to monitor the performance of the overall economy and is the single best measure of a society’s economic well-being
C.
c. is not used to monitor the performance of the overall economy but is the single best measure of a society’s economic well-being.
D.
d. is not used to monitor the performance of the overall economy and is not the single best measure of a society’s economic well-being
【简答题】二．“是以圣人常善救人，故无弃人；常善救物，故无弃物”给予后世管理者的智慧启示是（ ）（ ）。（选二）
【单选题】What aspect of bacteria is this lecture mainly about?
A.
How microscopic organisms are measured
B.
The use of bacteria for research in genetics
C.
Diseases caused by bacterial infections
D.
The three major types of bacteria
【单选题】— Many people have been out of work in China. — And _____ that the government is always taking measures to increase the number of employment. [ ]
A.
in spite of
B.
because of
C.
thanks to
D.
in addition to
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