主页
学科
搜索
账户
常见问题
当前学科：电网运行及调度考试
题目：
填空题
线路或其他电器设备如不能保证相位，必须经过（）后才能投入运行，用相位杆定相前应验明两端确已有电。
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
无限关系
试回答裂解分离系统的能量回收的三个主要途径？
Camping Camping wild is a wonderful way to experience the natural world and， at its best， it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness， it is becoming more and more important to camp unobtrusively （不引人注目地） and leave no mark. Wild camping is not permitted in many places， particularly in crowded lowland Britain. Wherever you are， find out about organizations responsible for managing wild spaces， and contact them to find out their policy on camping and shelter building. For example， it is fine to camp wild in remote parts of Scotland， but in England you must ask the landowner's permission， except in national parks. Camping is about having relaxation， sleeping outdoors， experiencing bad weather， and making do without modern conveniences. A busy， fully-equipped campsite （野营地） seems to go against this， so seek out smaller， more remote places with easy access to open spaces and perhaps beaches. Better still， find a campsite with no road access： walking in makes a real adventure. Finding the right spot to camp is the first step to guaranteeing a good night's sleep. Choose a campsite with privacy and minimum influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot. When camping in woodland， a void standing dead trees， which may fall on a windy night. Avoid animal runs and caves， and possible homes of biting insects. Make sure you have most protection on the windward side. If you make a fire， do so downwind of your shelter， always consider what influence you might have on the natural world. Avoid damaging plants. A good campsite is found， not made — changing it should be unnecessary. Animal runs，caves and homes of biting insects are best places for camping.（）
神志异常包括（）。
简述遗尿的定义及调护预防。
下列哪一种是诊断急性阑尾炎的重要依据（）
CT可见颅内圆形、椭圆形的均匀密度增高影，边界清楚，周围有环形密度减低影，局部脑室受压移位，中线移位。应考虑的疾病是（）
下列哪种酶对有多肽链中赖氨酸和精氨酸的羧基参与形成的肽键有专一性（）
关于VLAN说法正确的是()
实验产出