下列对枚举类型的正确定义形式为（ ） A: enum a={one,two,three}; B: enum a{one=9,two=-1,three}; C: enum a={"one","two","three"}; D: enum a{"one","two","three"};

以下对枚举类型名的定义中，正确的是__________。 A: enum a ={one,two,three}; B: enum a{a1, a2，a3}； C: enum a ={’1’,’2’，’3’}； D: enum a {"one","two"，"three" }；

在C#中值类型包括枚举类型，关于枚举类型的声明下面的选项哪一下是正确的（ ）。 A: num c={'1','2','3'}; B: enum a={one,two,three}; C: enum b {a1,a2,a3}; D: enum d{"one","two","three"};

George Gordon Byron is chiefly known for his two long poems. One is ________ and the other is Don Juan. A: "When We Two Parted" B: "To Men of England" C: Childe Harold's Pilgrimage D: "She Walks in Beauty"

In the poem of ________, Emily Dickinson compared the boat and the sea to two lovers. She showed us her desire for love and intimacy of beloved. A: "Wild nights-wild nights!" B: "I heard a Fly buzz - when I Died" C: "Because I could not stop for Death" D: "I died for Beauty - but was scarce"

The author arrived two days before the start of their safari. ("A Grand Safari in Tanzania") A: 正确 B: 错误

The first two lines of Alfred Tennyson's well-known poem "Break, Break, Break" read "Break, break, break, / oh, thy cold grey stones, O Sea!" The repeated word "break" suggests ____________. A: grief B: hatred C: fondness D: fear

Word中插入数学公式的方法是（）。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"

import pandas as pd dt = {'one': [9, 8, 7, 6], 'two': [3, 2, 1, 0]} a = pd.DataFrame(dt)" "阅读上述代码：（ ） A: a[1] B: a.ix[1] C: a.index[1] D: a.colums[1]

定义并初始化一个用于存放我们国家的四个直辖市的数组cityName，四个直辖市为：北京，上海，天津，重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };