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【单选题】
.某人佩戴光焦度为+2D的眼镜后,近点矫正到眼前的25cm处,原来的近点在眼前多少厘米处?
A.
17cm
B.
100cm
C.
50cm
D.
75cm
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【单选题】已知反应4NH 3 ＋5O 2 4NO＋6H 2 O，若反应速率分别用v(NH 3 )、v(O 2 )、v(NO)、v(H 2 O)表示，则下列正确的关系是(　　)
A.
v(NH 3 )＝v(O 2 )
B.
v(O 2 )＝v(H 2 O)
C.
v(NH 3 )＝v(H 2 O)
D.
v(O 2 )＝v(NO)
查看完整题目与答案
【多选题】一个完整的统计调查方案一般包括( )等几方面主要内容。
A.
调查目的
B.
调查范围（确定调查对象和调查单位）
C.
调查内容（确定调查项目、设计调查表）
D.
调查时间（确定调查时间和调查期限）
E.
制定调查工作的组织实施计划
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【单选题】We may infer from the context that 'upselling' (Line 2, Para. 6) probably means ______.
A.
selling something up
B.
selling something fancy
C.
selling something unnecessary
D.
selling something more expensive
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【单选题】氨氧化制硝酸第一步是在铂催化剂存在下发生下列反应：4NH3+5O2=4NO+6H2O反应前NH3流量40mol/h，O2流量60mol/h，反应后气体中NH34mol/h，则出口气体中NO含量是下列哪个数值？
A.
15
B.
36
C.
54
D.
24
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【单选题】We may infer from the context that 'upwelling'(Para. 6)probably means
A.
selling something up.
B.
selling something fancy.
C.
selling something unnecessary.
D.
selling something more expensive.
查看完整题目与答案
【单选题】已知反应4NH 3 +5O 2 ?4NO+6H 2 O，若反应速率分别用v （NH 3 ）、v （O 2 ）、v （NO）、v （H 2 O）（mol?L -1 ?min -1 ）表示，则下列正确的关系是（　　）
A.
4 5 v （NH 3 ）=v （O 2 ）
B.
5 6 v （O 2 ）=v （H 2 O）
C.
2 3 v （NH 3 ）=v （H 2 O）
D.
4 5 v （O 2 ）=v （NO）
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【简答题】We may infer from the context that 'upselling' (Line 2, Para.6) probably means（ ） [A] selling something up [B] selling something fancy [C] selling something unnecessary [D] sdling something more expen...
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【单选题】From May 6, pedestrians(行人) 10 yuan if they run red lights, according to Beijing traffic authorities.
A.
will fine
B.
were fined
C.
are fine
D.
will be fined
查看完整题目与答案
【单选题】From paragraph 6 we may infer that one of the effective measures suggested by Ludnik to pre-vent children from being obese would be___________
A.
not to permit them to watch TV at all
B.
to tell them to spend less time watching TV
C.
to turn off TV when they are in front of TV sets
D.
to calculate accurately the time that a child spends watching TV
查看完整题目与答案
【单选题】From the information given we understand that students ______.
A.
may only borrow books from their local library
B.
must have special tickets to borrow books from another library
C.
may lend their tickets to students in other libraries
D.
may use their tickets to borrow books from other libraries
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相关题目：
【单选题】已知反应4NH 3 ＋5O 2 4NO＋6H 2 O，若反应速率分别用v(NH 3 )、v(O 2 )、v(NO)、v(H 2 O)表示，则下列正确的关系是(　　)
A.
v(NH 3 )＝v(O 2 )
B.
v(O 2 )＝v(H 2 O)
C.
v(NH 3 )＝v(H 2 O)
D.
v(O 2 )＝v(NO)
查看完整题目与答案
【多选题】一个完整的统计调查方案一般包括( )等几方面主要内容。
A.
调查目的
B.
调查范围（确定调查对象和调查单位）
C.
调查内容（确定调查项目、设计调查表）
D.
调查时间（确定调查时间和调查期限）
E.
制定调查工作的组织实施计划
查看完整题目与答案
【单选题】We may infer from the context that 'upselling' (Line 2, Para. 6) probably means ______.
A.
selling something up
B.
selling something fancy
C.
selling something unnecessary
D.
selling something more expensive
查看完整题目与答案
【单选题】氨氧化制硝酸第一步是在铂催化剂存在下发生下列反应：4NH3+5O2=4NO+6H2O反应前NH3流量40mol/h，O2流量60mol/h，反应后气体中NH34mol/h，则出口气体中NO含量是下列哪个数值？
A.
15
B.
36
C.
54
D.
24
查看完整题目与答案
【单选题】We may infer from the context that 'upwelling'(Para. 6)probably means
A.
selling something up.
B.
selling something fancy.
C.
selling something unnecessary.
D.
selling something more expensive.
查看完整题目与答案
【单选题】已知反应4NH 3 +5O 2 ?4NO+6H 2 O，若反应速率分别用v （NH 3 ）、v （O 2 ）、v （NO）、v （H 2 O）（mol?L -1 ?min -1 ）表示，则下列正确的关系是（　　）
A.
4 5 v （NH 3 ）=v （O 2 ）
B.
5 6 v （O 2 ）=v （H 2 O）
C.
2 3 v （NH 3 ）=v （H 2 O）
D.
4 5 v （O 2 ）=v （NO）
查看完整题目与答案
【简答题】We may infer from the context that 'upselling' (Line 2, Para.6) probably means（ ） [A] selling something up [B] selling something fancy [C] selling something unnecessary [D] sdling something more expen...
查看完整题目与答案
【单选题】From May 6, pedestrians(行人) 10 yuan if they run red lights, according to Beijing traffic authorities.
A.
will fine
B.
were fined
C.
are fine
D.
will be fined
查看完整题目与答案
【单选题】From paragraph 6 we may infer that one of the effective measures suggested by Ludnik to pre-vent children from being obese would be___________
A.
not to permit them to watch TV at all
B.
to tell them to spend less time watching TV
C.
to turn off TV when they are in front of TV sets
D.
to calculate accurately the time that a child spends watching TV
查看完整题目与答案
【单选题】From the information given we understand that students ______.
A.
may only borrow books from their local library
B.
must have special tickets to borrow books from another library
C.
may lend their tickets to students in other libraries
D.
may use their tickets to borrow books from other libraries
查看完整题目与答案