安装于游泳池、喷水池、水上游乐场、浴室的照明线路,应选用额定漏电动作电流为(),快速动作的漏电保护器。
A、5mA
B、6mA
C、8mA
D、10mA
参考答案:D
It was only with the help of the local guide ______.
A.that was the mountain climber saved
B.when the mountain climber was saved
C.when the mountain climber was saved
D.that the mountain climber was saved
测量身高和体重指标所得的变量是()
A.定量变量
B.定性变量
C.字符变量
D.无序变量
E.有序变量