变压器油闪点指（）。A.着火点； B.油加热到某一温度油蒸气与空气混合物用火一点就闪

某人因外伤成了“植物人”，丧失了意识、自主饮食和运动能力，且大小便失禁，但呼吸和心跳正常。由此判断他的哪一结构功能正常？                         （  ）

A．脑干

B．脊髓

C．大脑

D．小脑

美国科学家近年宣称：普通盐水在无线电波照射下可燃烧，这伟大的发现，有望解决用水作人类能源的重大问题．无线电频率可以降低盐水中所含元素之间的“结合力”，释放出氢原子，若点火，氢原子就会在该种频率下持续燃烧．上述中“结合力”实质是（　　）

A．分子间作用力

B．氢键

C．共价键

D．离子键

We had guests last night who have not stayed in a B&B hotel ago. They did not want breakfast because that they were going out early in the morning. They came back lately and had some tea. I came into the living room and saw one of them just go through the kitchen door but turn on the light. He was looking for a glass the cupboard. He had no ideas that the kitchen was not for guests. I just smiled to me and thought, "What can I do We are guests after all. \

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2008年12月31日，甲公司存在一项未决诉讼。根据类似案例的经验判断，该项诉讼败诉的可能性为90%。如果败诉，甲公司将须赔偿对方100万元并承担诉讼费用5万元，但很可能从第三方收到补偿款10万元。2008年12月31日，甲公司应就此项未决诉讼确认的预计负债金额为（）万元。

A．90

B．95

C．100

D．105