问题
问答题 简答题
生产性粉尘的危害性有哪些?
答案
参考答案:
(1)尘肺;
(2)肺粉尘沉积症;
(3)有机粉尘所致的肺部病变;
(4)呼吸系统肿瘤;
(5)局部刺激作用。
生产性粉尘的危害性有哪些?
参考答案:
(1)尘肺;
(2)肺粉尘沉积症;
(3)有机粉尘所致的肺部病变;
(4)呼吸系统肿瘤;
(5)局部刺激作用。
阅读对话,从右边方框中选择适当的句子将对话补充完整。 | ||
Anna: Hello. Dr Smith’s office. John: Hello. 1 Anna: I’m afraid he isn’t here right now. I’m Anna, Dr Smith’s assistant. 2 John: Yes, please. This is John. Dr Smith invited me to his daughter’s birthday party on Saturday night. 3 I have to go to Australia on business this afternoon. I can’t come back until Sunday night. Anna: Oh, I’m very sorry to hear that. 4 John: Thank you. Goodbye. Anna: Goodbye. | ![]() | |
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