如图所示,一束光在空气和某种介质的分界面上同时发生反射和折射,其中______是

题型:填空题

问题:

如图所示,一束光在空气和某种介质的分界面上同时发生反射和折射,其中______是分界面,______是折射光线,反射角大小为________,分界面________边是空气。

考点:光的反射规律及其应用光的折射规律及其应用
题型:填空题

中央银行在证券市场上买卖有价证券是在开展它的()业务。

A.政策性 

B.公开市场操作 

C.投融资 

D.保值

题型:填空题

由于润滑脂的()不同,混合后会引起胶体结构的变化,影响使用性能。

A.闪点

B.稠化剂

C.添加剂

D.基础油

题型:填空题

根据我国《仲裁法》的规定,下列纠纷可以适用仲裁法调整的是( )。

A.继承纠纷

B.收养纠纷

C.劳动纠纷

D.工程合同纠纷

题型:填空题

肾虚头痛的临床特征是

A.头痛而眩
B.头痛而空
C.头痛如裹
D.头痛昏蒙眩晕
E.头痛如裂

题型:填空题

Second, a broad-based campaign to create a commercial market for clean stoves, including reducing trade barriers, promoting consumer awareness, and boosting access to large-scale carbon financing. Now, no single stove will meet the needs of every community across the world. In fact, previous efforts have taught us that if local tastes and preferences are not considered, people will simply not use the stoves, and we’ll find them stacked in piles of refuse. That’s why a market-based approach that relies on testing, monitoring, and research is so important, because if we do this right, these new stoves will fit seamlessly into family cooking traditions while also offering a step up toward a better life.

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