【简答题】There were people who would be glad to see him leave the plade, he knew it.
【单选题】It was a great _____ for him to be pleasant to people he didn’t like.
【简答题】空气中的二氧化碳由表及里向砼内部渗入,与氢氧化钙反应生成碳酸钙,使砼的碱度降低,减弱了对钢筋的保护作用,使钢筋生锈,这称为混凝土的 。
【单选题】电容器上的电压升高过程是电容器中电场建立的过程,在此过程中,它吸取的能量来自于
【单选题】He is _____ ,so many people like to be friends with him.
【单选题】At first many people disagreed to his opinions but ______ events have proved him to be right.
【简答题】碳化使混凝土 降低,减弱了对混凝土中钢筋的保护。
【单选题】切应力互等定理与剪切胡克定律的正确适用范围是( )
C.
切应力互等定理在比例极限范围内成立,剪切胡克定律不受比例极限限制
D.
剪切胡克定律在比例极限范围内成立,切应力互等定理不受比例极限限制