| The fossil remains of the first flying
vertebrates, the pterosaurs. have intrigued paleontologists for more than two
centuries, How such large creatures, which weighed in some eases as much as a
piloted hang-glider and had wingspans from 8 to 12 meters, solved the problems
of powered flight, and exactly what these creatures were — reptiles or birds —
are among the questions scientists have puzzled over. Perhaps the least controversial assertion about the pterosaurs is that they were reptiles. Their skulls, pelvises, and hind feet are reptilian. The anatomy of their wings suggests that they did not evolve into the class of birds. In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing like membrane. The other fingers were short and reptilian, with sharp claws. In birds the second finger is the prin A. enormous wingspans of the pterosaurs enabled them to fly great distances B. structure of the skeleton of the pterosaurs suggests a close evolutionary relationship to hats C. fossil remains of the pterosaurs reveal how they solved the problem of powered flight D. pterosaurs were reptiles [判断题]猪的采食量与胴体瘦肉量是呈正相关。
[多项选择]系统性硬化病的特异性临床表现为（）
A. 皮肤肿硬失去弹性 B. 雷诺现象 C. 硬指 D. 血小板减少 E. 指端缺血性溃疡 [单选题]1.305. 第305题
电压互感器二次负载变大时，二次电压（ ）。 A.变大； B.变小； C.基本不变； D.不一定。 [简答题]在考生文件夹下有一个Excel文件“Test.xlsx”和一个数据库文件“samp1.accdb”。“samp1.accdb”数据库文件中已建立3个表对象(名为“线路”、“游客”和“团体”)和一个窗体对象(名为“brow”)。请按以下要表和窗体的各种操作：
将“团队”表中的“团队ID”字段设置为主键；添加“线路ID”字段，数据类型为“文本”，字段大小为8。 [简答题]电源屏的日常测试有哪些内容？
[单选题]下列关于《仲裁法》中规定的仲裁制度的表述正确的是（）
A.当有两个以上仲裁机构时，仲裁委员会由当事人自主选定 B.仲裁委员会是人民法院的下属事业单位 C.仲裁审理以公开审理为原则 D.对生效的仲裁裁决书可请求上级仲裁委员会予以撤销 [单选题]脉象：轻取即得，重按稍减而不空，举之泛泛有余。属 （ ）
A. 沉脉 B. 迟脉 C. 浮脉 D. 数脉 E. 洪脉 [判断题]一般情况下，对于个人投资者而言，风险偏好是影响资产配置的最主要因素。( )
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