【单选题】触电者神志不清,意识丧失,应在()s内用看、听、试的方法,判定伤员呼吸心跳情况。
【多选题】电压互感器的误差与二次回路的阻抗有关,并伴随着阻抗值的变化而变化,其特性是()
【多选题】电压互感器的误差与二次回路的阻抗有关,并伴随着阻抗值的变化而变化,其特性是()。
【判断题】Je2B5265旁路断路器可以代替任一断路器运行。
【单选题】Which statement is true?
A.
To test multiple conditions in the process of making a decision requires logical operators.
B.
The keywords for the logical operators are AND , OR and NOT .
C.
The logical AND of two expressions is true if and only if each of the conditions is true.
D.
Truth tables deal only with cases in which all conditions are truthful (i.e., true).
【简答题】缓和曲线主点里程一般由ZH-HY-QZ-YH-HZ进行推算,已知JD里程,ZH里程=JD里程-(); HY里程=ZH里程+() ;QZ里程=HY里程+();YH里程=QZ里程+L/2-ls;HZ里程=YH里程+(); 利用HZ′里程=ZH里程+()进行检核。