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【单选题】
锰中毒是由于
A.
锰抑制线粒体内三磷酸腺苷酶和溶酶体中的酸性磷酸酶的活力,从而影响神经突触的传导能力
B.
锰具有高度弥散性和脂溶性,易于通过肺泡壁吸收
C.
锰对血红素合成酶的抑制作用
D.
锰能形成血红蛋白,造成机体各组织缺氧,引起中枢神经系统损害
E.
以上都不是
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【简答题】A.There are serious problems with it. B.The repairman is not available now. C.There are many cars waiting for repair. D.The repairman needs to check it again.
【简答题】Newspapers in Great Britain vary greatly in their ways of carrying the news. There are serious papers for those who want to know about important happenings everywhere, both at home and abroad. There a...
【简答题】阅读下列说明和C函数,填补C函数中的空缺,将解答填入答案纸的对应栏目内。 【说明】 字符串是程序中常见的一种处理对象,在字符串中进行子串的定位、插入和删除是常见的运算。 设存储字符串时不设置结束标志,而是另行说明串的长度,因此串类型定义如下: typedef struct ﹛ Char *str; //字符串存储空间的起始地址 int length; //字符串长 int capacity; //...
【判断题】利息是资金所有者贷出资金应付出的代价。
A.
正确
B.
错误
【简答题】A11—or—none law
【单选题】No such weapons were used and none been found.
A.
none have been
B.
none has
C.
no other has been
D.
no others been
【单选题】设有以下定义:int a=3,b=0,c=5;,则以下值为0的表达式是
A.
'a'&&'b'
B.
a&&bllc
C.
a&&b&&c
D.
allb&&c
【单选题】设有以下定义 int a[4][3]={{1,2,3},{4,5,6},{7,8,9),{10,11,12}; int *ptr[3]={a[0]},*p=a[0]; 则以下能正确表达数组元素a[1][2]的表达式是( )
A.
*((*ptr+1)[2])
B.
*(*(p+5))
C.
*((*ptr+1)+4)
D.
*(*(p+1)+2)
【单选题】What can we infer from Paragraph 3 and 4?
A.
There are serious defects in the mechanism of American social security.
B.
The government and enterprises provide benefits for married people to boost marriage rate.
C.
Marital status is often one consideration of insurance companies when they are determining the insurance premium.
D.
Enterprises always put the interest of most people at stake in order to satisfy its own' interest.
【单选题】设有以下定义 int a=0; int b(3); char c= ’ A ’ ; const int d= 2 则下面语句中错误的是()
A.
a++;
B.
b++;
C.
c++;
D.
d++;
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