皮皮学，免费搜题
登录
搜题
【单选题】
已知向量 a =(2，1)， a + b =(1，k)，若 a ∥ b ，则实数k= [ ]A.
B.
-2
C.
-7
D.
3
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】1节:任何一个完整的电路都必须有 、 和 3个基本部分组成
【简答题】Case Study Case Description: Tom Forrest, an up-and-coming executive for a U.S. electronics company, was sent to Japan to work out the details of a joint venture with a Japanese electronics firm. Duri...
【简答题】He found that he had only money left to ________________________________________.
【简答题】He found that he had difficulty in getting along with _______ ________ (女同事)who he had to work with at work.
【简答题】他发现自己坐错座位了。 He found that he had ___________________.
相关题目：