标准节流装置在测量粘性物质和腐蚀性物质时也没有必要装隔离器。_爱下问搜题

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问题判断题

标准节流装置在测量粘性物质和腐蚀性物质时也没有必要装隔离器。

答案

参考答案：错

单项选择题

（）用来防止电路和设备长期通过过载电流和短路电流，是有断路功能的保护元件，它由金属熔件（熔体、熔丝）、支持熔件的接触结构组成。

A．低压断路器

B．熔断器

C．接触器

D．漏电保护器

完形填空

To celebrate the end of our exams, my friends and I went to a fast food restaurant. We    hamburgers and Coca Cola at the counter. When our    came, I started walking towards an empty table. By bad luck, my bag strap(带子) got    on a chair and the tray(托盘) that I was holding slipped(滑)    my hands and went flying in the air. The tray, and its contents,    on a man who was just about to    a bite of his sandwich. I stared, greatly    , as the drinks soaked(浸湿) his white shirt.
Then I    my eyes and prepared myself for his burst of   . Instead, he said "It’s OK" to     me before he disappeared into the washroom.
Still shaky and unsure    to do next, my friends and I went to a table and sat there, trying our best to look   . A moment later, the man came out of the washroom, and    our table. My heart almost stopped   . I thought he was going to ask for my father's    and call him.
To my surprise, he merely smiled at us, handed us some cash and said,"    yourself new hamburgers."
He then walked    without even finishing his food.
He could have made what was already an uncomfortable situation worse,    he chose a different way and gave us a reason to believe that there is still    in this world. I'll never     his actions.

A．discouraged

B．disappointed