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【单选题】
设粒子在一维无限深阱中运动,能量量子数为n,当【图片】时距势阱内壁四分之一宽度以内找到粒子概率的极限为______
A.
1/16
B.
1/8
C.
1/4
D.
1/2
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举一反三
【判断题】机上救生衣穿好后应立即拉动手柄充气 ()
A.
正确
B.
错误
【单选题】(2013.10.11)在社会主义市场经济运行中,对资源配置起基础性调节作用的是
A.
政府
B.
企业
C.
市场
D.
价格
【简答题】阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项, 并在答题卡上将该项涂黑。 Feeling hopeless and sick at heart, Tom turned away. For a quick moment his eyes met the eyes of the cook, and he saw there a 36 of such hatred and...
【单选题】听力原文:M1: Hello. M2: Tom, this is Steve. M1: Steve, wow. It's great to hear from you. How are you doing, cousin? M2: Great, and I promise I'll make this quick, because I know you're probably heading ou...
A.
Uncle and nephew,
B.
Cousins.
C.
Brothers.
D.
Good friends.
【判断题】JDK 是 Java 运行环境,主要负责 Java 程序的运行。
A.
正确
B.
错误
【单选题】某传送带用变频器驱动,发现在50赫兹时无法启动装有重物的传送带,你觉得应该是应该让输出频率变大还是变小,才可以使传送带启动。
A.
适当变大
B.
适当变小
【单选题】听力原文:M1: Hello. M2: Tom, this is Steve. M1: Steve, wow. It's great to hear from you. How are you doing, cousin? M2: Great, and I promise I'll make this quick, because I know you're probably beading ou...
A.
Uncle and nephew.
B.
Cousins.
C.
Brothers.
D.
Close friends.
【多选题】轮胎平衡包括哪几种
A.
普通轮辋
B.
特殊轮辋
C.
一般轮辋
D.
赛车轮辋
【判断题】金融危机是指金融制度和货币体系的极度混乱和剧烈动荡,表现为股市狂泻、货币贬值、利率极高、工厂倒闭、银行破产、工人失业、市场一片混乱,是诱发经济危机和政治危机的根源。()
A.
正确
B.
错误
【单选题】How to Cook a Quick & Easy Perfect Turkey - YouTube.mp4 How much time does a frozenturkey take to thaw in the fridge?
A.
One day for every five pounds of turkey
B.
Five days for every pound of turkey
C.
Three days for every ten pounds of turkey.
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