单项选择题
A.0.2辆 B.0.3辆 C.0.5辆
A.0.1辆 B.0.2辆 C.0.3辆
A.0.2辆 B.0.5辆 C.0.8辆
A.0.5辆 B.0.8辆 C.1辆
A.1辆 B.1.3辆 C.1.5辆
A.50% B.60% C.80%
A.空调维护上岗证 B.空调销售许可证 C.空调维护资格证
A.电工证 B.上岗证 C.电工资格证
A.登高证书 B.登高资格证 C.登高安全证
A.代维技能证书 B.技能资格证书 C.代维资格证书
A.岗前培训 B.安全教育 C.上岗认证