皮皮学，免费搜题
登录
搜题
【简答题】
正常情况下，人体内环境的成分和理化性质能够维持相对稳定，这是机体进行正常生命活动的必要条件。而近年来，温室效应造成全球气候异常引起的自然灾害越发频繁，广州市等我省很多城市每到秋冬季节还经常出现灰霾天气。灰霾中的亚微米粒子会沉积于呼吸道和肺泡中，引起支气管炎等病症。请分析回答相关问题：体温的恒定对于人体正常生命活动至关重要。剧烈运动时骨骼肌产热增加，同时机体会通过（）、（）两条主要途径加强散热，以维持体温恒定。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—Is Lucy knocking at the door? —No. It ______ be Lucy. She is in Japan now. [ ]
A.
needn't
B.
mustn't
C.
can't
D.
shouldn't
【简答题】Smoking is considered erous to the health. Our tobacco-seller Mr. Johnson, therefore, always asking his customers if they are very young, whom the cigarettes are bought 1 . One day, a little girl ...
【简答题】Under a CIF contract, the goods had been loaded on board the vessel according to the terms of the contract. Then the vessel departed. An hour later the vessel struck a rock and sank. The next day the ...
【简答题】A．Lucy King isn't at home right now. B．Lucy King doesn't want to answer the phone. C．Lucy King is busy now. D．The man got the wrong number.
【简答题】科氏加速度是由(____)运动与(____)运动相互影响产生的。
【单选题】The particular price that results in quantity supplied being equal to quantity demanded is the best price because it
A.
maximizes costs of the seller.
B.
maximizes tax revenue for the government.
C.
maximizes the combined welfare of buyers and sellers.
D.
minimizes the expenditure of buyers.
【单选题】We can’t afford ______ such an important customer. [ ]
A.
upset
B.
to upset
C.
upsetting
【简答题】科氏加速度是由(____)运动与(____)运动相互影响产生的。
相关题目：