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【单选题】
用迭代法解n元线性方程组Ax=b,求得的( )。
A.
得到的是精确解
B.
不考虑舍入误差的影响,得到的是精确解
C.
即使不考虑舍入误差的影响,一般情况下得到的也是近似解
D.
一定不能得到精确解
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【单选题】以下哪项不属于气管异物的常见原因
A.
进食时误吸
B.
口含物品玩耍
C.
昏迷患者呕吐
D.
意识障碍
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【单选题】以下哪项不属于气管异物的常见原因
A.
进食时的误吸
B.
口含物品玩耍
C.
昏迷患者呕吐
D.
进食时说笑
E.
意识障碍
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【单选题】Look! Tom with his friend ________ hair. He ________ handsome.
A.
is cutting, looks
B.
are cutting, is looking
C.
is cutting, looks like
D.
are cutting, is looking like
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【单选题】选择所缺的正确字母 subst_____ce n. 物质
A.
an
B.
en
C.
on
D.
un
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【单选题】在下列函数中,函数值为数值的是
A.
AT('人民','中华人民共和国')
B.
CTOD('01/01/96')
C.
BOF()
D.
SUBSTR (DTOC(DATE()),7)
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【单选题】Why do UK universities try to attract postgraduate students from outside the EU?
A.
A substantial part of their revenue comes from non-EU students tuition and fees.
B.
Non-EU postgraduate students are usually highly motivated.
C.
The number of UK postgraduate students has fallen sharply.
D.
Some of the postgraduate progrmnmes are specially designed for non-EU students.
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【单选题】柴油机的组成中不包括( )。
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润滑系
B.
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C.
点火系
D.
起动系
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【单选题】截取当前字符串s从3到末尾的子串的语句是()
A.
s.left(3)
B.
s.right(3)
C.
s.subString(3)
D.
s.subString(3,s.length())
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【单选题】The boy has a handsome face _____ the scar on his forehead. [     ]
A.
except
B.
except for
C.
except that
D.
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【单选题】Caffeine, the stimulant in coffee, has been called “the most widely used psychoactive substance on Earth .” Synder, Daly and Bruns have recently proposed that caffeine affects behavior. by countering ...
A.
discuss a plan for investigation of a phenomenon that is not yet fully understood
B.
present two explanations of a phenomenon and reconcile the differences between them
C.
summarize two theories and suggest a third theory that overcomes the problems encountered in the first two
D.
describe an alternative hypothesis and provide evidence and arguments that support it
E.
challenge the validity of a theory by exposing the inconsistencies and contradictions in it
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【单选题】以下哪项不属于气管异物的常见原因
A.
进食时误吸
B.
口含物品玩耍
C.
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【单选题】在下列函数中,函数值为数值的是
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B.
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C.
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【单选题】Why do UK universities try to attract postgraduate students from outside the EU?
A.
A substantial part of their revenue comes from non-EU students tuition and fees.
B.
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Some of the postgraduate progrmnmes are specially designed for non-EU students.
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【单选题】柴油机的组成中不包括( )。
A.
润滑系
B.
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起动系
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【单选题】截取当前字符串s从3到末尾的子串的语句是()
A.
s.left(3)
B.
s.right(3)
C.
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D.
s.subString(3,s.length())
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【单选题】The boy has a handsome face _____ the scar on his forehead. [     ]
A.
except
B.
except for
C.
except that
D.
besides
查看完整题目与答案
【单选题】Caffeine, the stimulant in coffee, has been called “the most widely used psychoactive substance on Earth .” Synder, Daly and Bruns have recently proposed that caffeine affects behavior. by countering ...
A.
discuss a plan for investigation of a phenomenon that is not yet fully understood
B.
present two explanations of a phenomenon and reconcile the differences between them
C.
summarize two theories and suggest a third theory that overcomes the problems encountered in the first two
D.
describe an alternative hypothesis and provide evidence and arguments that support it
E.
challenge the validity of a theory by exposing the inconsistencies and contradictions in it
查看完整题目与答案