皮皮学，免费搜题
登录
搜题
【简答题】
若角α的终在直线y=-x上，则 sinα 1- sin 2 α + 1- cos 2 α cosα1 的值等于 ______．
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Write down the words according to the corresponding explanations. 1. l v. hit violently or suddenly 2. s n. a sudden uncontrolled movements of muscles 3. g n. an attempt to get enough air into your lu...
【单选题】下列关于控件的说法中正确的是
A.
控件是窗体上用于输入数据、修改数据、执行数据的对象
B.
计算型控件用表达式作为数据源，表达式可以利用窗体或报表所引用的表或查询字段中的数据，但不可以是窗体或报表上的其他控件中的数据
C.
虽然组合框的列表由多行数据组成，但平时只能显示一行，而且不能输入新值，所以它的应用比列表框要窄
D.
窗体中的列表框可以包含一列或几列数据，用户只能从列表中选择值，而不能输入新值
【简答题】In an 8. 2 earthquake almost destroyed America, killing over 30 000 people in less than four minutes. A father rushed to the 1 where his son was supposed to be, only to discover that the building...
【简答题】一个足球 30 元,用 75 元钱可以买几个小足球,还剩多少钱?
【单选题】A perfectly competitive firm seeking to maximize its profits would want to maximize the difference between:
A.
its marginal revenue and its marginal cost.
B.
its total revenue and its total cost.
C.
its accounting revenue and its accounting cost.
D.
its price and its marginal cost.
【简答题】All of a sudden, he lost his interest in engineering, and_______ his attention on learning a foreign language.
【单选题】.6.All of a sudden, he lost his interest in engineering, and __ his attention on learning a foreign language.
A.
focus
B.
focused
C.
focusing
D.
focusion
相关题目：