【单选题】用S表示进栈操作,用X表示出栈操作,若元素的进栈顺序是1234,为了得到1342的出栈顺序,相应的S和X的操作序列为( )
【单选题】下列关于文献类型标识符说法不正确的是?
A.
文后的参考文献著录中,[J]代表该文献是期刊论文
B.
文后的参考文献著录中,[P]代表的是专利文献
C.
文后的参考文献著录中,[R]代表的是科技报告
D.
文后参考文献的著录中,[M]代表该文献是会议论文
【简答题】下列描述物质的变化中,不属于化学变化的是
【简答题】Century Park is a great place to rest after a hard week. The grand square and green lawns allow you to get away from busy city life and crowds. There’s not much entertainment in the park, but you can ...
【单选题】—Would you mind my _______ the window? — _______. There’s too much smoke in the room.
【单选题】原发性肝癌最灵敏,最特异的肿瘤标志物是()
【简答题】Write down the words according to their Chinese translation and examples. 1 S________ n. 工资 annual ________ increases 2 s________ a. 感官的 ; 感觉的 ________ stimuli 3 s________ a. 高级的,精密的 a ________ number...