Write a memo in about 50 words. You are Human Resources Manager. Your company is going to provide the staff with training in E-Commerce. There will be two course levels: intermediate level and advanced level. The training course will be given on Saturdays for five weeks. Write a memo to department managers: ·Informing them of the coming training course; ·Asking them to encourage the staff to participate; ·Asking them to help obtain the names of the interested staff.

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[单选题]为了确保通风机的安全运行，备用主要通风机必须能在（）分钟内开动。

[问答题]最小夹直线长受哪些条件控制？

[单选题]急性重度一氧化碳中毒的机制是（）。

[单选题]阑尾炎病人可能存在的体征不包括下列哪项（）。

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[判断题]使用救助吊带被吊起时，应保持面部对着吊钩，双手紧抓住吊带。（）

[多选题]加强放炮管理，需严格执行的制度有（）

[单选题]下列引起胸痛的胸壁疾病是（）

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