随着电弧电压和弧长增加,电弧的摆动加剧,熔宽明显增加,余高和熔深略有(),焊缝成形得 发布时间:2017-05-13 22:44 │ 来源:www.tikuol.com 题型:单项选择题 问题: 随着电弧电压和弧长增加,电弧的摆动加剧,熔宽明显增加,余高和熔深略有(),焊缝成形得到改善。过高的电弧电压容易使焊缝两侧出现咬边现象。A、增加B、减小
题型:单项选择题 Our English teacher wrote many notes about ______ English yesterday.[ ]A. speak B. speaks C. to speak D. speaking 查看答案
题型:单项选择题 To ensure the project team provides the functionality the customer expects in a new piece of software,the project manager ask the customer for sign-off on the design criteria. These documents are().A.technical specificationsB.performance specificationsC.product descriptionsD.quality assurance 查看答案
题型:单项选择题 进行Captopril试验,下列哪项说法是准确的()。A.常规肾动态显像放射性全部排完后B.口服Captopril50~100mgC.口服Captopril后随即开始显像D.服药前后肾动态图像及肾图结果对比,双肾对比异常如明显增加,单侧肾动脉狭窄的可能性较大E.肾动脉狭窄越明显,则对Captopril反应越明显 查看答案