男，40岁，双腕关节和指间关节疼痛、肿胀、压痛超过6周，X线片显示有骨质疏松改变，手

下列关于氧化沟的说法，正确的是( )。

A．氧化沟内混合液，其主体属于完全混合态

B．氧化沟系统BOD负荷较低、污泥龄较长

C．氧化沟溶解氧浓度梯度变化具有推流式的特征

D．奥巴尔(Orbal)氧化沟内、中、外沟内溶解氧浓度分别为0、1mg/L和2mg/L

关于可摘局部义齿基托伸展的范围，下列哪项是错误的（）

A.应与天然牙轴面的非倒凹区轻轻接触

B.上颌远中游离者应伸至翼颌切迹，远中颊角应覆盖上颌结节

C.下颌远中游离者应覆盖磨牙后垫1／3～1／2

D.基托应尽量伸展以获得良好的封闭和固位效果

E.尽量减小基托范围，使患者感到轻巧、舒适、美观

Technology will continue to advance and change, and you must（）earn.

A. delightedly

B. practically

C. constantly

D. properly

The mosaic theory is the idea that an analyst can:（）

A. make investment recommendations on the basis of several pieces of nonpublic information as long as the aggregate information remains nonmaterial.

B. base his recommendations on nonpublic material information only for the clients of the company, but not for the general public.

C. make recommendations or trade based on several pieces of public or nonpublic information, each piece by itself being nonmaterial, but when compiled the information becomes material.

药品可按君、臣、佐、使的顺序排列的是（）

A.处方

B.普通处方、急诊处方、儿科处方

C.中药饮片处方

D.麻醉药品和第一类精神药品处方

E.医疗用毒性药品、第二类精神药品处方