【多选题】由电容器电容的定义式 C = Q/U ,可知
B.
电容 C 与所带的电荷量 Q 成正比,与电压 U 成反比
D.
电容在数值上等于使两极板间的电压增加 1 V 时所需增加的电荷量
【简答题】根据所提供的句子意思,将所给单词的正确形式填空,使句子意思完整。并在答题卡上将答案填写在对应题号的横线上。 小题1:I think MoYan is a great (write). 小题2:An elephant is one of the ______ (big) animals in the world. 小题3:Father’s Day is on the (three) Sunday i...
【简答题】根据句意,填上单词的正确形式。 We will set up a factory in that country,which is rich in ______________(nature) resources.
【简答题】根据句意、首字母和汉语提示,用单词的正确形式填空,并把完整单词填写在答题卷相应的位置上。 71. According to the sales manager’s report, a large q____________ of milk has been sold. 72. As to traditional Chinese table manners, parents are the best...
【简答题】根据句意,填上单词的正确形式。 I really enjoy _________(work) together with you, and thank you for your cooperation.
【简答题】下图所示为二级标准斜齿圆柱齿轮减速器。已知小齿轮1为输入端,转动方向如图;齿轮2的模数m n =2.5mm,齿数z 2 =49,螺旋角β=14.5°,螺旋线方向如图;齿轮3的模数m n =4mm,齿数z 3 =18。试求:斜齿轮3的螺旋角β应取多大值,才能使Ⅱ轴的轴向力相互抵消?
【简答题】单词拼写。 根据下列各句句意和空白之后的汉语提示词,在横线上写出对应单词的正确形式,每空只填一词。 1. The cruel and ____(贪婪的) woman was punished by those children. 2. Lack of money led to the abortion of the_____(工程). 3. You'd better finish your hom...