单晶体呈各向异性，而多晶体呈现各向同性。

下列化学反应，不属于氧化还原反应的是（　　）

A．2Na₂O₂+2H₂O=4NaOH+O₂↑

B．2Al+2NaOH+2H₂O=2NaAlO₂+3H₂↑

C．3Cu+8HNO₃（稀）=3Cu（NO₃）₂+2NO↑+4H₂O

D．2NH₃+H₂SO₄=（NH₄）₂SO₄

We have every reason to believe that our business has shown a(n) __________ to improve.

A．direction

B．tendency

C．aspect

D．compromise

男性，34岁，发热、全身酸痛4天，咳嗽、痰中带血3天，7月初入院，体检患者烦躁，球结膜充血，两肺可闻及湿啰音，X线胸片显示肺部阴影融合成片，内有少量含气空腔残存，最可能的诊断为（）

A.黄疸出血型钩体病

B.肺弥漫性出血型钩体病

C.急性黄疸型肝炎

D.大叶性肺炎（中毒型）

E.肾损害型钩体病

To keep certain information private and secure while providing remote access for employees, many businesses are creating intranets. An intranet is an (71) organizational internet that is guarded against outside access by a special (72) feature called a firewall (which can be software, hardware, or a combination of the two).

A．interconnection

B．security

C．isolation

D．access

评分者信度揭示的是测评中的（）

A、个体误差

B、标准误差

C、系统误差

D、随即误差