主页
学科
搜索
账户
常见问题
当前学科：维修电工考试
题目：
问答题
使用变频器应注意什么？
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:
行政单位存货科目核算的是行政单位在开展业务活动及其他活动中为耗用而储存的各种物资的（）。
肋骨骨折的处理原则，下列不正确的是（）。
Promising Results from Cancer Study A new experimental vaccine(疫苗)has shown promising results in the fight against lung cancer．In a small Texas-based study，a vaccine developed by scientists at Baylor University Medical Centre in Dallas，USA，cured lung cancer in some patients and slowed the progress of the disease in others． Researchers have reported encouraging findings from this small study．Forty-three patients suffering from lung cancer were involved in these trials．Ten of these patients were in the early stages and thirty—three in the advanced stages of the disease．They were injected with me Vaccine every two weeks for three months，and were carefully monitored for three years.In three of the patients in me advanced stages of cancer，the disease disappeared and in the others，it did not spread for five to twenty—four months．However，no great difference was seen in the patients in the early stages of the illness． This new vaccine uses the patients’own immune、system．It is made specifically for each patient and is injected into the arm or leg．It stimulates the body’s immune system，which then recognizes that the cancer cells are harmful，and attacks and destroys them. The vaccine could be effective against other forms of cancer．It offers great hope for the treatment of cancer in general，although further studies are needed before such treatment can be widely used．根据以上内容，回答题。The vaccine cured all the participants in the trial．
根据环境影响评价的分类管理的规定，环境影响评价文件的类型有哪几种？
读稿员
检测220kV电压等级的绝缘子串时，当发现同一串中的零值绝缘子片数达到几片时，应立即停止检测。
女，28岁，G1P0孕38周，不规则腹痛2天，血压正常，头先露，胎心音在脐下154次／分，胎背在母体左侧扪及，宫缩20秒，间隔10分钟，阴道检查宫颈未消失，宫口开大1cm，胎心监护示NST不满意。临产17小时查宫缩持续25秒，间歇6～8分钟，胎心152次／分，宫口开大2cm，先露在棘上1cm。下列哪项诊断恰当（）
澳门的标志性建筑是：（）。
教育学形成时期的主要著作有（）
简述防守的基本姿势？