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【简答题】
根据晶体结构特点,即晶体所具有的特征对称元素,晶体可以分成 种不同的晶系 , 种不同的点阵形式。
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参考答案:
举一反三
【单选题】伴高钾血症的高血压患者禁用
A.
卡托普利
B.
氨氯地平
C.
氢氯噻嗪
D.
维拉帕米
E.
美托洛尔
【单选题】H 2 O 的共轭碱是( )
A.
CI -
B.
Ac -
C.
H 3 O +
D.
OH -
【单选题】三相电机制中,相邻两相电压波形相差相位是
A.
变压器
B.
变送器
C.
发电机
D.
蓄电池
【多选题】汉语中有些说法与汉文化密切相关。英译我们习以为,常的词语时要考虑西方读者的理解与接收能力,常有必要增添注释以填补文化差异。比较以下四种译文中对“而立之年”的处理。你喜欢哪一种,为什么? 谁知道他将到“而立之年”,竟被小尼姑害得飘飘然了。
A.
How was it to be anticipated that at the late age of forty, he should be brought so low by a little nun so to feel that he was fluttering, flutteing, fluttering.
B.
Who would have thought that at the "age of moral independence" he should  be succumb to the evil spell of a little nun? age of moral independence: that is, thirty, at which Confucius was said to have achieved this state.
C.
Who should tell that close on thirty, when a man should "stand firm", he would lose his head like this over a little nun? stand firm: Confucius said at thirty he "stood firm". The phrase was later used to indicate that a man was thrity years old.
D.
Who could have possibly foreseen that just as he was approaching the age when, like Confucius, he should have "stood firm”, Ah Q would be so subverted by a yound Buddhist nun that he would go around walking on air. stand firm:  In a well-known passage of The Analects Confucius says, "At thiry, I stood firm."
【简答题】程序功能:求输入的整数各位数字之和,如输入 234 则输出 9 ,输入 -312 则输出 6 。 #include void main() { int n,s=0; scanf("%d",&n); n=(n>0?n:-n) ; while( 1 ) { 2 ; 3 ; } printf("%d\n",s); }
【单选题】三相电机制中,相邻两相电压波形相差相位是
A.
180
B.
120
C.
90
D.
60
【简答题】程序功能:求输入的整数各位数字之和,如输入 234 则输出 9 ,输入 -312 则输出 6 。 #include void main() { int n,s=0; scanf("%d",&n); n=(n>0?n:-n) ; while( 1 ) { 2 ; 3 ; } printf("%d\n",s); }
【单选题】H 3 O + 的共轭碱是?
A.
H +
B.
H 2 O
C.
H 2 O 2
D.
OH -
【判断题】硅稳压二极管只要工作在击穿区就会立即损坏。
A.
正确
B.
错误
【简答题】根据酸或碱的质子理论, PO 4 3- 的共轭酸是 , H 2 O 的共轭碱是 。
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