（）不属于电源调试检查的内容。A.电源变换开关是否在要求的挡位

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问题单项选择题

（）不属于电源调试检查的内容。

A.电源变换开关是否在要求的挡位上

B.输入电压是否正确，是否装入熔断器

C.通电后有无打火、冒烟现象，有无异味，变压器是否有超常温升

D.输出电流是否达到规定值，电流波形有无异常

答案

参考答案：D

填空题

根据首字母提示，填写单词完成短文。

Mary has four cousins. (1)T are Betty, Peter, Bill and Ann. Mary is the(2) o of the five.

Betty is 13 years old. She is 2 years (3)y than Mary and one year oder than Peter. Bill is nine, and Ann, the (4)y is seven.

Betty and Peter are good runners, But Peter (5)r faster. Mary and Ann like to play basketball.

Mary (6)p better than Ann. Bill is the(7) b singer of the five.

Mary and Betty(8) s in a middle school. The 5 children all(9) w _ Betty hard at school. But

Betty works (10)h .

单项选择题

The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.

A.shield fire fighters from radiant heat

B.break up burning material

C.get the most water possible on the fire

D.drive heat and smoke ahead of the fire fighters