关于从业人员的安全生产义务主要有三项：即遵章守规，服从管理；_爱下问搜题

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问题判断题

关于从业人员的安全生产义务主要有三项：即遵章守规，服从管理；接受安全生产教育和培训；发现不安全因素及时报告。

答案

参考答案：对

完形填空

I know I should have told the headmaster at the time. That was my real    21 .
He had gone out of the study for some   22  , leaving me alone. In his absence I looked to see what was on his    23  . In the   24 was a small piece of paper on which were written the    25 “English Writing Prize 1949. History Is a Serious of Biographies (人物传记)”.
A(n)   26  boy would have avoided looking at the title as soon as he saw the 27   . I did not. The subject of the English Writing Prize was kept a    28   until the start of the exam so I could not 29   reading it.
When the headmaster     30  , I was looking out of the window.
I should have told him what had    31  then. It would have been so 32 to say: “I’m sorry, but I 33 the title for the English Writing Prize on your desk. You’ll have to   34   it.”
The chance passed and I did not take it. I sat for the exam the next day and I won. I didn’t mean to cheat, but it was still    35   anyhow.
That was thirty-eight years ago when I was fifteen. I have never told anyone about it before, nor have I tried to explain to myself why not.

A．disappeared

填空题

白磷（P₄）是一种常见的晶体，可用于制备较纯的磷酸。

（1）白磷是____________晶体，31g白磷与足量的氧气完全燃烧释放出745.5kJ的热量，请写出白磷燃烧的热化学反应方程__________________________

（2）已知白磷和氯酸溶液可发生如下反应：

①____P₄ +____HClO₃+____→___HCl +___H₃PO₄配平并完成上述反应方程式；

②该反应的氧化剂是______________。