皮皮学，免费搜题
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【判断题】
线性规划如果有最优解,则它一定会出现在可行域的边界上。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】A tourist is going to reserve an air ticket to Paris, but he is not sure about the return date. So what kind of ticket would you suggest him to book?
A.
Return ticket.
B.
One-way ticket.
C.
Open ticket.
D.
Round-trip ticket.
【多选题】Lee is going to reserve an air ticket to Paris. But he is not sure about the return date. So what kind of ticket would you suggest him to book?
A.
Return ticket
B.
One-way ticket
C.
Open ticket
D.
Round-trip ticket
【多选题】Lee is going to reserve an air ticket to Paris. But he is not sure about the return date. So what kind of ticket would you suggest him to book?
A.
return ticket
B.
one-way ticket
C.
open ticket
D.
round-trip ticket
【多选题】A tourist is going to reserve an air ticket to Paris. But he is not sure about the return date. So what kind of ticket would you suggest him to book?
A.
Return ticket.
B.
One-way ticket.
C.
Open ticket.
D.
Round-trip ticket.
【简答题】reserve a flight ticket
【简答题】How do we reserve an air ticket?
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