主页
学科
搜索
账户
常见问题
当前学科:电气专工试题
题目:
判断题
检查常用继电器的触头,动合触头在闭合后,应有足够的压力,即可动部分动作至最终位置时,动合触头接触后应有一定的超行程。
A . 正确
B . 错误
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:
调高系统()用来锁紧千斤顶活塞使滚筒锁定在固定的位置上,不致因泄露而下降。
种用、乳用动物和宠物应当符合()规定的健康标准。
患者女,60岁。脑出血恢复期,查体:患者神志清楚,左侧中枢性偏瘫,偏身感觉减退,站立位能伸手够物并保持平衡,但是在外力推动下不能站稳。此类患者最常见的异常步态是()
某女,15岁,主诉活动性呼吸困难,半年来加重,无紫绀。心脏听诊:胸骨左缘第3~4肋间闻及全收缩期杂音并伴震颤,心尖区闻及舒张中期反流性杂音,P2>A2、心电图示:V5导联R波增高,Q波深而窄,T波高尖、X线示:靴形心。综合所给信息,该病例初步诊断为()
In every cultivated language, there are two great classes of words which, taken together, comprise the whole vocabulary. First, there are those words(1)which we become acquainted in daily conversation, which we(2),that is to say, from the(3) of our own family and from our familiar associates, and(4) we should know and use (5 )we could not read or write. They (6) the common things of life, and are the stock in trade of all who (7) the language. Such words may be called“popular”, since they belong to the people (8) and are not the exclusive (9) of a limited class. On the other hand, our language (10) a multitude of words which are comparatively (11) used in ordinary conversation. Their meanings are known to every educated person, but there is little (12) to use them at home or in the market-place. Our (13) acquaintance with them comes not from our mother's (14) or from the talk of our school-mates, (15) from books that we read, lectures that we (16) ,or the more (17)conversation of highly educated speakers who are discussing some particular (18) n a style appropriately elevated above the habitual(19) f everyday life. Such words are called“learned”, and the (20) between them and the“popular”words is of great importance to a right understanding of linguistic process. 请在8处填上正确答案()
男,57岁,腰、肩痛数年,发现蛋白尿1周入院。无水肿,血压正常。尿常规蛋白+++,红白细胞少量,血红蛋白50g/L,血尿素氮1O.65mmol/L,肌酐230.85μmol/L。血钙12.00mg/dl(3.00mmol/L),血沉60mm/h,血碱性磷酸酶正常。(1)要考虑哪些疾病?(2)进一步做哪些检查才能确定诊断?
正常新生儿红细胞参考值是()。
涡轮流量计投表操作步骤()
高脂蛋白血症表型分类可分为()
戊型肝炎在临床症状上与甲肝相似。死亡率与甲肝相比().