16Which machine tool is mainly used to produce cylindrical surfaces?ALatheBPlanerCMilling machineDShaperView AnswerDiscussWorkspaceReportSaveEasy
17Soldering joins metals using a filler with a melting point below:A2000 °CB450 °CC100 °CD1000 °CView AnswerDiscussWorkspaceReportSaveEasy
18Welding that uses an electric arc between an electrode and the work is:AResistance weldingBGas weldingCArc weldingDThermit weldingView AnswerDiscussWorkspaceReportSaveEasy