SS4型电力机车上普通小型直流电动机检修要求:用塞尺检查电刷在刷握内的轴向间隙为()。
A. 0.05~0.20mm
B. 0.05~0.30mm
C. 0.06~0.20mm
D. 0.06~0.30mm
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细波浪线的用途是部分省略表示时的断开界线,曲线形构件断开界线、构造层次的断开界线。
A. 正确
B. 错误
A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by,the next step is to().
A. proceed with fueling operation
B. have helicopter move to a safer location
C. wash spilled fuel away with a flood of water
D. clean spilled fuel with rag
《基本医疗保险药品目录》所列药品包括西药、中成药、中药饮片。西药和中成药列()基本医疗保险基金的药品目录,药品名称采用(),并标明剂型。
A. 准予支付;通用名
B. 准予支付;药典名
C. 不予支付;通用名
D. 不予支付;药典名
夜航中,一船自你船左舷横越,通过观察发现来船的罗经方位越来越大,这说明来船将()。
A. 横越你船船艏通过
B. 从你船船尾通过
C. 存在碰撞危险
D. 以上均不对