DL/T1009-2006《水电厂计算机监控系统运行及维护规程》规定:备品备件宜每半年进行(),不合格时应及时处理。
A.通电测试;
B.现场安装测试;
C.返厂测试。
参考答案:A
路面标记指示前方路口仅允许车辆向右转弯。
A vessel is tender if cargo weight is().
A.concentrated high and the double bottoms empty
B.concentrated low and the double bottoms empty
C.evenly distributed vertically with the double bottoms full
D.concentrated and with the double bottoms full