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[单选题]
下列关于电抗元件上电压和电流的描述中，正确的是( )
A
仅电感上流过的电流不能突变b.仅电容两端的电压不能突变c.电感上流过的电流和电容两端的电压都不能突变d.电感上流过的电流和电容两端的电压都能突变
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参考答案
试题答案：
C
答案解释：
电感上流过的电流和电容两端的电压都不能突变。
相关题目
与非门的逻辑功能为( )
某电阻的阻值为100，额定电压为10V，其额定电流和额定功率分别是（）
甲类单管功率放大电路中结构简单，但最大的缺点是
电路如题27图所示，逻辑与非门要实现F= AB，则C端应接_____
已知某晶体管的三个电极电位如下图所示，则该晶体管工作在（ ）
卡诺图中，把8个相邻项合并，能够消除的变量数为（ ）
反相比例运算电路从反馈的角度去看，它属于_____负反馈电路。
某电阻两端的电压是10V，流过的电流是2A.则该电阻阻值等于_____
差分放大器对差模信号有较强的放大能力，对共模信号有较强的_____能力。
场效应管是_____控制电流的器件。
热门试题
1.
15.信息系统建设中可行性分析内容包括
2.
计算机网络最突出的优点是____。
3.
23.Plants bring life and color into the home and require little in the way of maintenance. Follow these simple tips and your plants should thrive.Look for the best place in the house for each plant, and don't be afraid to try different locations until you find the best spot. If a room seems too dark to sustain a healthy plant, don't be fooled. Most indoor plants originate in tropical and subtropical regions, in particular equatorial forests, and they thrive in dim environments and filtered light. The ideal spot is in front of a large window facing east or west, filtered if necessary through a net scrim curtain. If you have a plant that thrives on lots of sun, place it on a windowsill facing north or north-east. Check soil moisture levels regularly and inspect the leaves to check they are not being burned. At the slightest sign of withering, move the plant towards the middle of the room. Water poured directly onto the soil may flood, or not reach the pot plant's roots. Instead, water plants bottom up by standing them in a dish and filling the dish with water. Delicate plants such as fuchsias thrive on this method. For this method to work, all pots should have holes in the bottom through which the water is absorbed. If you don't want your plant to die of heat or cold, avoid placing it in draughty areas or near ducted heat or air-conditioning outlets. Water your plants only when the potting mix feels dry to the touch — over watering is often the cause of indoor plant death. Check by pushing your finger into the soil; if it comes out without any trace of soil on it, start watering. Remember that plants may need more frequent watering in summer. Most indoor plants benefit from an occasional misting of water. Make sure the water is at room temperature and use an atomizer or spray bottle. Misting is particularly beneficial if you live in a centrally heated or air-conditioned house as the air can become very dry.23.1 If a room seems too dark to sustain a plant, people should____.A.look for another room for indoor plantsB.only keep plants that originate in tropical areasC.still try to find ideal spot for indoor plants in the roomD.give up the idea of keeping indoor plants
4.
根据第④段文意，下列说法中不正确的一项是（ ）
5.
The Prince told his dog to __________ when he was out. 查看材料
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