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【单选题】
已知 为非零实数，且 ，则下列不等式一定成立的是 （ ）A.
B.
C.
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【单选题】A co-worker is playing music through his computer speakers loud enough to hear down the hall. What should you do?
A.
Start singing along. If you can’t beat them, join them.
B.
Put on your headphones and sulk.
C.
Turn up the music on your own computer. Two can play at that game.
D.
Nicely walk over and say that while you are a huge fan of Bachman-Turner Overdrive, you are having trouble concentrating. Ask politely if he wouldn't mind listening through headphones
【简答题】请选择两款汽车,对找汽车主要性能进行对比分析,要求通过查找技术参数与配置,制作PPT在下次课(8月20日)上进行逐一介绍,本次课业成绩作为过程考核成绩。注意:作业提交时间8月19日。 1动力性的三个指标:最高车速(功率)、加速时间(传动比)、爬坡能力 2经济性一个指标:百公里耗油 3制动性三个指标:制动效能、制动恒定性、制动方向稳定性 4操纵性两个指标:操作稳定性、操纵性 5行驶平顺性: 6行驶通...
【多选题】If a station officer finds that there is a passenger standing before a ticket gate who can’t get out for some reasons, what should he or she do?
A.
A station officer should advise the passenger to deal it at the customer card service center if the passenger’s card if broken.
B.
A station officer should open the access door and let him leave.
C.
A station officer should advise the passenger to update his card information in the customer card service center if the passenger doesn’t touch in at the start of his journey.
D.
A station officer should take penalty money directly from the passengers and let him go if the passenger doesn’t touch in at the start of his journey.
【简答题】在1min的时间内,通过导体横截面的电荷量为12C ,则通过导体的电流大小为 ____ A。
【简答题】C Monday: Here I am, in the middle of nowhere. This camping trip idea is not getting off to a very good start. It’s raining and the tent leaks (漏). The hiking seemed to take forever, and I still can’t...
【单选题】下列有关分段函数说法正确的是
A.
分段函数是好几个函数组合在一起的，本质上不是一个函数；
B.
分段函数可以有很多个自变量，比如 , 这种写法也是对的；
C.
分段函数只能分成两段；
D.
分段函数在本质上仍然是一个函数。
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