皮皮学，免费搜题
登录
搜题
【单选题】
下面四个命题: 1分别在两个平面内的两直线是异面直线; 2若两个平面平行,则其中一个平面内的任何一条直线必平行于另一个平面; 3如果一个平面内的两条直线平行于另一个平面,则这两个平面平行; 4如果一个平面内的任何一条直线都平行于另一个平面,则这两个平面平行. 其中正确的命题是( )A.
①②
B.
②④
C.
①③
D.
②③
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
【单选题】A consumer's behavior was observed in three situations with dierent prices and incomes. In Situation 1, she chose a bundle that cost $1,600. In Situation 2, she chose a bundle that cost $2,500. In Sit...
A.
the bundle purchased in Situation 1 must cost less than $3,100 at Situation 3 pric
B.
the bundle purchased in Situation 3 must cost at least $3,100 at Situation 1 price
C.
the bundle purchased in Situation 1 can not cost less than $3,100 at Situation 3 price
D.
the bundle purchased in Situation 2 must cost at least $3,100 at Situation 1 pric
【单选题】Which of the following is NOT a man-overboard situation?
A.
“Immediate action” situation.
B.
“Quick action” situation.
C.
“Early action” situation.
D.
“Delayed action” situation.
【单选题】STAR原则具体包括什么?
A.
Situation、Task、Action、Result
B.
Situation、Task、Action、Requirements
C.
Situation、Task、Ability、Result
D.
Situation、Task、Ability、Requirements
【单选题】In what situation is the invitation card often used?
A.
Formal situation
B.
Informal situation
【单选题】Which of the following is NOT a man-overboard situation?
A.
“Immediate action” situation.
B.
“Quick action” situation.
C.
“Person missing” situation.
D.
“Delayed action” situation.
相关题目：