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【简答题】
Seven years, my Lord, have now passed since I waited in your outward rooms, or was repulsed from your door; during which time I have been pushing on my work through difficulties of which it is useless to complain, and have brought it, at last, to the verge of publication, without one act of assistance, one word of encouragement, or one smile of favor. Such treatment I did not expect, for I never had a patron before. 1. Who is the writer of this paragraph? 2. What does the aboved paragraph want to express?
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皮皮学刷刷变学霸
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【简答题】某发动机气缸总容积V为5升，燃烧室容积V1为3，求其压缩比。
【多选题】视频发布的渠道有哪些（）
A.
在线视频渠道（如爱奇艺、优酷等）
B.
资讯客户端（如今日头条、一点资讯等）
C.
短视频渠道（如抖音、快手等）
D.
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【单选题】请你判断以下说法中正确的是 [ ]
A.
板蓝根属于天然药物，适合长期食用
B.
保健食品有益无害，还能治病
C.
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有毒的药就叫做毒品
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