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【多选题】
支付结算的基本原则有:A.
恪守信用，履约付款原则
B.
谁的的账、由谁支配原则
C.
银行不垫款原则
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is exciting about the new fuel cells? 查看材料
A.
Their limitless power generation capacity is amazing.
B.
Their limited power generation capacity is a good beginning.
C.
Their limited power generation capacity is the result of great efforts.
D.
Their limitless power generation capacity is a major accomplishment.
【简答题】水体污染包括重金属污染、水体富营养化和__________等方面。
【简答题】Primary cells, secondary cells and cells are three types of cells and batteries. (fuel / solar)
【简答题】水体污染是指大量污染物质排入水体，超过水体的____，使水质恶化，水体及其周围的_____遭到破坏，对人体健康、生活以及生产活动等造成威胁和损失的情况。水体污染的来源主要有____、____和____。
【简答题】There are 3 types of cells and batteries: primary cells, secondary cells, (fuel cells / recharging cells).
【简答题】水体污染越来越严重，怎样防止水体污染呢？（3分）
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【简答题】Primary cells, secondary cells and cells are three types of cells and batteries. (fuel / solar)