【单选题】下列关于配送功能的叙述,错误的是( )。
【单选题】关于电介质及其极化,下列说法中错误的是( )。
A.
电介质也称绝缘体,其内部不存在能够自由移动的电荷
B.
正、负电荷中心重合的分子称为无极分子;正、负电荷中心不重合的分子称为有极分子
C.
在外电场中,无极分子电介质的极化是取向极化(转向极化),有极分子电介质的极化是位移极化。
D.
在外电场中,电介质表面出现极化面电荷,在不均匀电介质内部还会出现极化体电荷
【单选题】要使美好的人生价值目标变为现实主要靠( )
【判断题】框架结构是指由梁和柱以刚接或者铰接相连接而成构成承重体系的结构,即由梁和柱组成框架共同抵抗适用过程中出现的水平荷载和竖向荷载。
【单选题】What are the qualities that Cholly supposed to develop in his quest for his father?
A.
He is supposed to learn the importance of responsibility
B.
He is supposed to learn the importance of patience and leadership
C.
He is supposed to know the orientation of his life better
D.
He is supposed to purify his own soul
【单选题】What are the qualities that Cholly supposed to develop in his quest for his father?
A.
He is supposed to learn the importance of patience and leadership
B.
He is supposed to know the orientation of his life better
C.
He is supposed to learn the importance of responsibility
D.
He is supposed to purify his own soul
【判断题】框架结构: 由梁和柱以刚接或者铰接相连接而成构成承重体系的结构
【单选题】易炭化物是指( )。
B.
药物中遇H2SO4易炭化或易氧化而呈色的微量有机杂质
C.
药物中遇H2SO4易炭化或易氧化而呈色的微量无机杂质