皮皮学，免费搜题
登录
搜题
【判断题】
z=xy在点(1,1,1)处的切平面的法向量为(1,1,1)。A.
正确
B.
错误
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】Lesson 22 听一遍写出900句句子
【简答题】Lesson 7 听一遍写出900句句子-4
【简答题】Lesson 7 听一遍写出900句句子-3
【单选题】Which one of the following sentences can be a good topic sentence for a paragraph to describe a person?
A.
Mrs. Su is the most patient person in the neighborhood.
B.
I'd like to tell you what my father looks like.
C.
My brother is crazy because he seems to spend every cent he has on skiing.
D.
There are three steps to cook scrambled eggs.
【简答题】Lesson 7 听一遍写出900句句子-5
【简答题】Lesson6 听一遍写出900句句子-4
【简答题】Lesson 7 听一遍写出900句句子-2
【简答题】Lesson6 听一遍写出900句句子-5
【简答题】Lesson6 听一遍写出900句句子-2
【简答题】如下程序的循环次数为(),执行完变量i的值为(),变量 total的值为() 。 int total = 0 ; int i = 0 ; while ( i < 10 ) { scanf ( "%d" , &n ) ; total +=n ; i++ ; }