不属于码头巡回检查要注意的内容是()
A.阀门开关是否正确
B.油品温度压力是否正常
C.阀门法兰输油臂是否泄漏
D.油品密度是否正常
参考答案:D
-How many students are there in your class ?
-Forty-five. [ ]
A.at all
B.in total
C.in the end
D.in the total
A.电流表的示数为3/11 A
B.通过灯泡的电流的频率为50Hz
C.电流表的示数为3/22 A
D.理想变压器原、副线圈匝数之比为2:1