( ) 对于 效益 相当于 经营 对于 ( )A．投入 利润 B．成本 税收 C

男，25岁，左上后牙烤瓷冠修复半年，近1个月来自觉刷牙出血，龈 * * 呈现球状增生，质松软。最可能的诊断（）

A.增生性龈炎

B.药物性牙龈增生

C.青春期龈炎

D.妊娠期龈炎

E.青少年牙周炎

对明渠恒定均匀流，在已知通过流量Q、渠道底坡i、边坡系数m及粗糙系数n的条件下，计算梯形断面渠道尺寸的补充条件及设问不能是（）。

A．给定水深h，求底宽b

B．给定宽深比β，求水深h与底宽b

C．给定最大允许流速[v]_max，求水深h与底宽b

D．给定水力坡度J，求水深h与底宽b

某1岁半幼儿，不慎将食物碎片吸入气管，此时不应做的是（）

A.立即人工呼吸

B.背部叩击

C.胸部按压

D.背部叩击时急救者应托住婴儿的下颌以支撑其头部

E.背部叩击可与胸部按压交替进行

山东省甲酒厂生产的“太岁”高粱酒，在市场上颇有名气，山西省乙酒厂推出“状元”高粱酒，其酒瓶形态和标签图案与“太岁”几近一致，但注册商标、厂名及厂址均与“太岁”不同，则以下说法正确的是_________。

A．因注册商标、厂名及厂址均不相同，乙不构成对甲的侵权

B．“太岁”酒瓶外观设计并未申请专利，乙厂可自由使用

C．两种商品装潢外观近似，乙厂行为构成不正当竞争

D．乙厂的行为属于虚假广告行为

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (51) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (52) course. Prospective students have to show that they can afford their studies, and that they have sufficient (53) resources to support themselves (54) in this country.

In order to work here the foreigner needs a work permit, (55) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (56) these permits, and there is little that can be done (57) it; it would be extremely unwise for a foreign visitor to work (58) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (59) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (60) part-time jobs while they are studying here.

53().

A.natural 

B.financial 

C.moral 

D.occasional