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【简答题】
在3Cu+8HNO 3 =3Cu（NO 3 ） 2 +2NO↑+4H 2 O反应中， （1）用双线出该反应电子转移的方向和数目：3Cu+8HNO 3 =3Cu（NO 3 ） 2 +2NO↑+4H 2 O （2）判断氧化剂是______；______元素被氧化；被还原的HNO 3 与参加反应的HNO 3 物质的量之比是______． （3）写出该反应的离子方程式：______．
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【单选题】.给予足量特布他林和氨茶碱治疗一天,病情无好转,呼吸困难加重,唇发绀,此时应采取
A.
原有药物加大剂量再用一天
B.
大剂量丙酸倍氯米松吸入
C.
静脉滴注头孢菌素
D.
静脉滴注5％碳酸氢钠
E.
静脉滴注琥珀酸氢化可的松
【单选题】_______ from her parents, she was left with her two young sisters--aged three and seven.
A.
Being separated
B.
Having been separated
C.
Having separated
D.
Had been separated
【单选题】乙酐-吡啶-髙氯酸法测醇时,酰化剂过量50%以上才能反应完全,所以NaOH滴 定剂的用量V0(空白测定值)与V(样品测定值)之间的关系为( )。
A.
V>2/3 V0
B.
V>l/2 V。
C.
V>1/3V。
D.
V=V。
【单选题】Xiao Li said that he ____ in that small village then and didn't want to leave there.
A.
got used to live
B.
was used to live
C.
used to living
D.
was used to living
【单选题】______ my knowledge, she has not seen her parents since she left the United States.
A.
In
B.
As
C.
At
D.
To
【单选题】Mother used to live in a poor village,____________?
A.
used she
B.
usedn’t she
C.
didn’t he
D.
did he
【单选题】Mother used to live in a poor village,___?
A.
used she
B.
usedn’t she
C.
didn’t he
D.
did she
【单选题】She ______ a letter to her parents since she left.
A.
didn’t write
B.
haven’t got
C.
didn’t have
D.
haven’t write
【简答题】Li Ming used________ on the right in China, but he soon got used ________ on the left in England.此题出自2015年河北孝感中考英语真题及答案,河北孝感2015年中考试题英语问卷 Li Ming used________ on the right in China, but he soon got us...
【单选题】导线坐标增量闭合差调整的方法是求出闭合差的改正数，以改正有关坐标的增量。闭合差改正数是将闭合差按与导线长度成下列中哪种关系求得的?
A.
正比例并同号
B.
反比例并反号
C.
正比例并反号
D.
反比例并同号
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