题型：名词解释 在波的传播方向上有两个质点P和Q，它们的平衡位置相距s="1.2" m，且大于一个波长，介质中的波速为v="2" m/s，P和Q的振动图线如图12-3-6所示，求振动周期的最大值，并画出t=0时的波的图象.图12-3-6 查看答案
题型：名词解释 此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正：此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。此行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。注意：原行没有错的不要改。 Dear Ralph, I'm a senior student. I'm getting well with a boy in my class. But I have fallen in love with him for almost half a year. He is shy boy, so I wrote him a letter first to express my feeling. He wrote back. In his letter he said, "We are students. Our task is study hard. Let us to wait and see whether we have any chance after graduation." So after graduation I telephoned to him, asking him about going out. But he said he didn't want to. He just wanted to sleep and watched TV. What did you think I should do? Do you think I should continue to love him and give up? 1.________ 2.________ 3.________ 4.________ 5.________ 6.________ 7.________ 8.________ 9.________ 10.________ 查看答案
题型：名词解释 甲保险公司依法宣告破产，其破产财产在优先支付破产费用后，最优先得到清偿的是：A．赔偿或者给付保险金B．甲公司所欠税款C．甲公司所欠职工工资和劳动保险费用D．甲公司所欠乙银行债务 查看答案
