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【单选题】
听力原文: The United States has strongly criticized the broadcast of previously unseen images of alleged prisoner abuse at Abu Ghraib Prison in Iraq. The images, which show prisoners apparently being tortured and humiliated, have been shown on television stations across the world. The American Defense Department confirmed the authenticity of the pictures, but said releasing them could only serve to incite unnecessary violence. The American authorities are very unhappy that these new disturbing images from Abu Ghraih have seen the light of day. The State Department has dismissed them as disgusting and defended the US government's decision to try and stop their publication. Which of the following statements about the American Defense Department is TRUE?
A.
It has denied the authenticity of the pictures of abused prisoners.
B.
It has supported the decision to stop the publication of the pictures.
C.
It has considered the pictures of abused prisoners unacceptable.
D.
It has been worrying about the violence incited by the pictures.
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【单选题】湿闪电压是指 雨水降落方向与水平面呈( ) 角淋在绝缘子表面时,使其闪络的最低电压值。
A.
30度
B.
35度
C.
45度
D.
50度
【简答题】五氯化磷的分解反应为 PCl 5 (g) === Cl 2 (g) + PCl 3 (g) 在一定温度和压力下,反应达平衡,改变如下条件,五氯化磷的解离度如何变化?为什么?(设均为理想气体) ( 1 )降低气体总压; ( 2 )通入氮气,保持压力不变,使体积增加一倍; ( 3 )通入氮气,保持体积不变,使压力增加一倍; ( 4 )通入氯气,保持体积不变,使压力增加一倍。
【单选题】PCl5(五氯化磷)的分解反应PCl5(g) == PCl3(g) + Cl2(g)在473 K达到平衡时PCl5(g)有48.5%分解,在573 K达到平衡时,有97 %分解,则此反应是
A.
吸热反应
B.
放热反应
C.
标准摩尔 反应吉布斯自由能变为零 的反应
D.
在这两个温度下标准平衡常数相等的反应
【简答题】下述原子在基态时含有未配对的电子数为 ( 1 ) Mn____ ; ( 2 ) Fe_____ 。
【简答题】绝缘子湿闪络电压是指雨水在降落方向与绝缘子表面呈()度角淋在绝缘表面时,使其闪络的最低电压。
【多选题】关于胃的动脉,下述说法正确的是
A.
胃左动脉起自腹腔干,并有分支营养食管腹段
B.
胃右动脉沿胃小弯向左走行
C.
胃网膜左动脉的终支多与胃网膜右动脉吻合,形成胃大弯动脉弓
D.
胃网膜右动脉沿胃大弯向右走行分布于胃前、后壁
E.
胃后动脉起自腹主动脉,分布于胃底后壁
【单选题】绝缘子湿闪络电压是指雨水在降落方向与绝缘子表面呈( )度角淋在绝缘子表面时,使其闪络的最低电压。
A.
20
B.
30
C.
45
D.
60
【单选题】五氯化磷分解反应为 PCl 5 (g)=PCl 3 (g)+Cl 2 (g) ,已知 298.2K 、 100kPa 下反应的标准摩尔反应焓为 88 k J· mol -1 ,标准摩尔反应熵 170.27J· mol -1 · K -1 ,则反应的标准摩尔反应吉布斯函数变约为( )。
A.
- 37225 J· mol -1
B.
-50.686.5 J· mol -1
C.
37225 J· mol -1
D.
50.686.5 J· mol -1
【判断题】绝缘子湿闪络电压是指雨水在降落方向与绝缘子表面呈45度角淋在绝缘表面时,使其闪络的最低电压。
A.
正确
B.
错误
【简答题】下述原子在基态时含有未配对的电子数为:(2分) (1)Mn____; (2)Fe_____。
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