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【简答题】
A．During the journey down, many people showed care and concern for others. B．It took the speaker much longer than the others to escape from the building because he had an artificial leg. C．The building collapsed immediately after the speaker got out. D．Many people died because they got trapped in elevators.
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【简答题】误差有正、负之分,测定值大于真实值时,误差为 表示分析结果 ;测定值小于真实值时,误差为 表示分析结果 。
【简答题】The fact is that he would come back.
【单选题】The fact is that he didn’t notice the car until too late .
A.
主语从句
B.
宾语从句
C.
表语从句
D.
同位语从句
【简答题】设计一容器,内径1000mm,工作压力1.MPa,安全阀开启压力调定为1.1MPa,要求焊缝为双面对接接头或相当于双面焊的全焊透对接接头,局部无损检验,封头整体冲压成型,介质对钢板的年腐蚀率为0.15mm/a,设计寿命20a,设计温度300°C,现有库存厚度为10、12、14三种规格的Q235B钢板,试问该容器的筒体和标准椭圆形封头应该用哪种规格钢板制作。