职业技能鉴定专家委员会实行()
A、上级任命制
B、企业投票制
C、委员聘任制
D、考核制
参考答案:C
铁塔维护必配的仪表和工具包括()
A.驻波比测试仪、车辆
B.罗盘仪、坡度仪、塞尺
C.接地电阻测试仪、经纬仪
D.数码相机、安全带、力矩扳手
______ is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.
A.LAN B.Post office C.E-Mail D.I-dimension array