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【单选题】
选项( )的说法是错误的。A.
设计单位对设计文件的质量负责;
B.
从事压力管道设计的单位，必须取得设计许可证。
C.
《设计许可证》有效期为4年
D.
社会中介机构、从事特种设备检验检测的机构也可以申请设计许可。
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举一反三
【单选题】以下关于一个点的应力状态的描述正确的是________。
A.
一点处的总应力的大小与方向是唯一确定的。
B.
一点处的正应力的大小与方向是唯一确定的。
C.
一点处的切应力的大小与方向是唯一确定的。
D.
只知道点的位置，无法具体描述该点的总应力、正应力与切应力。
【单选题】Nelson Mandela opened a black law firm in order to ____.
A.
make money
B.
help the poor black people with their problems
C.
make himself famous
D.
study law
【单选题】In 1965, a new Voting Rights Bill became law, ________all black people had the right to vote from then on.
A.
by which
B.
that
C.
by what
D.
which
【单选题】The law of black-body radiation was given in 1900 by ( )?
A.
Rutherford
B.
Plank
C.
Bohr
D.
Boltzmann
【简答题】A Chinese exporter received an irrevocable L/C from a foreign country, this L/C was advised and confirmed by a foreign bank located in China. The Chinese company effected shipment and was to present t...
【单选题】Mr. Black, ＿＿＿＿＿ born in Kentucky, lived and practiced law in Missouri.
A.
was
B.
he was
C.
although
D.
who he was
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