1.选择题- (共5题)
1.如图所示,质量为m的金属环用线悬挂起来,金属环有一半处于水平且与环面垂直的匀强磁场中,从某时刻开始,磁感应强度均匀减小,则在磁感应强度均匀减小的过程中,关于线拉力大小的下列说法中正确的是 ( )

2.如图所示,质量为m的金属环用线悬挂起来,金属环有一半处于水平且与环面垂直的匀强磁场中,从某时刻开始,磁感应强度均匀减小,则在磁感应强度均匀减小的过程中,关于线拉力大小的下列说法中正确的是 ( )

4.
.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
5.
.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
2.单选题- (共1题)
3.填空题- (共5题)
4.解答题- (共3题)
13.
过点Q
作圆C:
的切线,切点为D,且QD=4.
(1)求
的值;
(2)设P是圆C上位于第一象限内的任意一点,过点P作圆C的切线l,且l交x轴于点A,交y 轴于点B,设
,求
的最小值(O为坐标原点).


(1)求

(2)设P是圆C上位于第一象限内的任意一点,过点P作圆C的切线l,且l交x轴于点A,交y 轴于点B,设


试卷分析
-
【1】题量占比
选择题:(5道)
单选题:(1道)
填空题:(5道)
解答题:(3道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:0
7星难题:0
8星难题:0
9星难题:9