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【单选题】
某工地实验室做混凝土抗压强度的所有试块尺寸均为100mm×100mm×100mm，经标准养护条件下28天取得了抗压强度值，问如何确定其强度等级?A.
必须用标准立方体尺寸150mm×150mm×150mm重做
B.
取其所有小试块中的最大强度值
C.
可乘以尺寸换算系数0. 95
D.
可乘以尺寸换算系数1.05
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举一反三
【单选题】The cabin emergency exits are used for _____.
A.
embarking only
B.
evacuation only
C.
disembarking only
D.
loading goods
【单选题】Don’t forget where the emergency exits are _____an emergency.
A.
in place of
B.
in favor of
C.
in case of
D.
in charge of
【判断题】Emergency exits are located on each side of the aircraft. All the exits are clearly marked.
A.
正确
B.
错误
【简答题】ABB集团总部位于 。
【单选题】But more than a month passed, real winter had come, and everything was still clear in his memory as though he ________ with Anna only the day before.
A.
was parted
B.
has parted
C.
had parted
D.
had been parting
【单选题】互感器的作用是将系统中的一次高电压或大电流经过互感器,被成比例地转换成为低电压或者小电流,使测量、计量等仪表的量程和量限得到()。
A.
扩大
B.
缩小
C.
变化
D.
不变
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