皮皮学，免费搜题
登录
搜题
【单选题】
关于化脓性关节炎的护理措施,错误的是A.
急性期病人需要卧床休息
B.
体温高的病人应给予物理降温
C.
急性期病人不宜进行骨骼肌的收缩运动
D.
患肢制动，保持功能位
E.
遵医嘱应用抗生素控制感染
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】关于自感现象,正确的说法是:( )
A.
感应电流一定和原电流方向相反
B.
线圈中产生的自感电动势较大的其自感系数一定较大
C.
自感电动势总是阻碍原来电流的变化
D.
对于同一线圈，当电流变化越大时，线圈中产生的自感电动势也越大
【单选题】关于自感现象下列说法中正确的是 。
A.
感应电流一定和原电流方向相反
B.
线圈的自感系数大，它的自感电动势一定大
C.
对于同一线圈，当电流变化较大时，产生的自感电动势也较大
D.
对于同一线圈，当电流变化较快时，产生的自感电动势也较大
【单选题】Part B (10 points) You are going to read a text about the situation of the blacks in America, followed by a list of examples and explanations. Choose the best example or explanation from the list for ...
A.
It has been estimated that there are more than 20 million Americans in this category, 10% of the population, including many millions of whites.
B.
Blacks are gaining in self-confidence. In more and more areas they are winning control of their communities, and their standard of living is going up faster than that of the poor whites. It is still a hard struggle. There is still prejudice and even some hatred, but in most walks of American life there are now more blacks than ever before.
C.
The era of blatant discrimination ended in the 1960s through the courageous actions of thousands of blacks participating in peaceful marches and sit-ins, to force Southern states to implement the Federal desegregation laws in schools and public accommodations. Down came the 'whites only' notices in bused, hotels, trains, restaurants, sporting events, restrooms and on park benches that once could be found everywhere throughout the South. Gone were the restrictions that prevented blacks voting. Gone, too, were the hideous lynchings, which since the Civil War had caused the death of thousands of innocent blacks—hanged without trial by white mobs. However, even today, poor, uneducated lacks do not always receive the same degree of justice that the more affluent and better educated can expect.
D.
Many blacks chose to keep silent about their unfairness instead of resorting to violence. But their silence was also problem provoking: on the one hand, silence would build up a lot of complaints and hatred in their minds, thus resulting in a negative approach to lif
【单选题】关于自感现象,正确的说法是:
A.
感应电流一定和原电流方向相反；
B.
线圈中产生的自感电动势较大的其自感系数一定较大；
C.
对于同一线圈，当电流变化越大时，线圈中产生的自感电动势也越大；
D.
自感电动势总是阻碍原来电流变化的。
【单选题】文本框Text1的MouseUp事件有如下代码: If Button=1 And Shift=1 Then Text1.Text= “大家好!” End If 其功能是( )。
A.
按下Ctrl键同时在文本框Text1上单击鼠标左键，则Text1上显示“大家好！”
B.
按下Shift键同时在文本框Text1上单击鼠标右键，则Text1上显示“大家好！”
C.
按下Shift键同时在文本框Text1上单击鼠标左键，则Text1上显示“大家好！”
D.
按下Ctrl键同时在文本框Text1上单击鼠标右键，则Text1上显示“大家好！”
【单选题】关于自感现象,正确的说法是( )
A.
自感电动势总是阻碍原来电流变化的
B.
感应电流一定和原来电流方向相反
C.
线圈中产生的自感电动势较大，它的自感系数也一定大
D.
对于同一线圈，电流变化越大时，产生的自感电动势也越大
相关题目：
参考解析：
知识点：
题目纠错 0
发布
