我国刑法所保护的而被犯罪所侵害的社会关系，是犯罪构成要件中的 。A．犯罪主体 B

某原电池总反应离子方程式为2Fe³⁺+Fe═3Fe²⁺，能实现该反应的原电池是（　　）

A．正极为铜，负极为铁，电解质溶液为FeCl₃溶液

B．正极为铜，负极为铁，电解质溶液为Fe（NO₃）₂溶液

C．正极为铁，负极为锌，电解质溶液为Fe₂（SO₄）₃

D．正极为银，负极为铁，电解质溶液为CuSO₄

Americans’ (1) impulses keep generating surprises. Charitable giving plays an even larger role in the (2) . Demand for nonprofit services gets proportionately bigger as a locality’s (3) rises. The philanthropy of the wealthy may not hinge on tax (4) to the degree many believe. The US (5) the world in levels of charitable activity. Some experts see charity as a (6) trait of the US, more than (7) or business. But those forces may be (8) , as many nonprofits, from healthcare to classical music are selling (9) in a marketplace alongside for-profit (10) . Charity is no mere (11) activity. It pays off for society in ways that may (12) the rates of return on many traditional investments. Charity not only helps those on the (13) end but also strengthens the (14) of society at large. Moreover, it appears to make the givers themselves more (15) . The pattern that conservatives are better givers than (16) is less about politics than about charity-linked (17) most common to conservatives, religious commitment, marriage and children, and entrepreneurship. The main point is that more Americans, regardless of ideology, embrace giving as a tool for (18) . The urge to make a difference, and to take (19) in it, outweighs (20) considerations.

循泵出口蝶阀油站油压的正常应在什么范围？

下半口义齿基托后部的封闭区是（）

A．磨牙后垫

B．颊侧翼缘区

C．下颌隆突

D．下颌舌骨嵴

E．远中颊角区

被拘留人委托的律师会见被拘留人不受次数和时间的限制，但应当在正常工作时间进行。