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当前学科：动物生理学
题目：
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可兴奋细胞兴奋时的共同特征是产生（）
A . 反射活动
B . 腺体分泌
C . 神经传导
D . 肌肉收缩
E . 动作电位
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男性，40岁。不规则发热40天，伴纳差、腹胀，右上腹痛，近1周干咳伴右下胸痛来诊。体检：体温39℃，消瘦，心肺（-），右腋前线第7、8肋间有局限性压痛，局部软组织肿胀，肝肋下3cm，质中、有压痛。B超见肝脏有一4cm×3．5cm液平段，肝穿刺抽出50ml液体，经抗阿米巴药物治疗10d后，体温正常，脓腔缩小，诊断为阿米巴肝脓肿。本列肝脓肿脓液光镜检可有以下发现，除外（）
什么叫阀门，其主要作用是什么？
Perhaps no single monument in the USA is as famous as the Statue of Liberty. Standing on a small island in New York Harbor, the crowned lady, holding aloft(在高处)in her right hand the torch of freedom and in her left hand a tablet which is inscribed(雕刻)"July 4th, 1776", is a symbol of American democracy. She is colossal. She is 151 foot high and the pedestal(基座)on which she stands is almost as much. An elevator takes visitors to the top of the pedestal, around which a balcony runs. A spiral(螺旋形)staircase goes up to the crown, and another to the torch. The Statue of Liberty was a gift to the USA from France in 1886, as a mark of friendship and also in memory of the aid France gave the Americans during the American Revolution. For millions of immigrants, the Statue was their first sight of the promised Land, and for a few it was also the last, as they sailed back home again. About a mile from Liberty Island, there is another small island, called Ellis Island, which was looked up on with dread by the immigrants. For it was here that they had to wait their turn to be examined by doctors and officials. Most of the immigrants could not speak a word of English. But only two out of 100 immigrants were refused admission to New York City. Often the person refused turned out to be a grandmother or a weary, frightened girl mistakenly labeled "feebleminded. " Sometimes husbands and wives were parted because one of them happened to have a bad cough and was suspected of having tuberculosis(肺结核). New York City was a bitter disillusionment to some immigrants. Far from being a city paved with gold, it was a city teeming(充满)with overcrowded, unhealthy and unsafe ghettos. The immigrants looked for earlier immigrants of their own national or religion. So Italian, Polish, Irish, Jewish neighborhoods grew up. Because they could not speak English, the newcomers found it difficult to get work at once, and their living quarters were often slums. However, they found in the USA opportunities of bettering themselves. Today immigrants no longer have to endure the indignities(侮辱)of Ellis Island. The grim buildings were closed down in 1924. In 1976, Ellis Island became an historic monument.Which of the following is the best title for this passage? ______A．Gateway to the USA.B．Statue of Liberty.C．Ellis Island.D．Immigrants of the USA.
房地产抵押后，企、事业单位法人分立或合并后，原抵押合同（）。
无论是直流电动机还是交流电动机，进行能耗制动时都应采取防止出现反转现象的控制措施。
手动式喷雾机以（）为动力，利用喷洒部件将药液喷洒到农作物上。
若痰湿头痛久郁化热，口苦便秘，舌红苔黄腻，脉滑数者，可加用（）
下列哪几项属于病原体的致病力（）
进行证券投资应遵循（ ）原则
票汇采用的支付工具是：（）