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【简答题】
常见的带传动的张紧装置有 、 、 。
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举一反三
【单选题】下列关于溶液型气雾剂的叙述错误的是
A.
常选择乙醇、丙二醇作潜溶剂
B.
抛射剂汽化产生的压力使药液形成气雾
C.
药物可溶于抛射剂（或加入潜溶剂）时，常配制成溶液型气雾剂
D.
常用的抛射剂为二氧化碳气体
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【单选题】I could have turned to Mr. Smith for help, but he ______ too busy then.
A.
is
B.
was
C.
should be
D.
has been
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【简答题】请用代码简要描述如何画出自定义短信备份按钮的外层圆圈。
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【简答题】Questions 3 and 4 are based on the news report you have just heard. 3. A) He is a queen bee specialist. B) He works at a national park. C) He removed the bees from the boot. D) He drove the bees away ...
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【简答题】He didn’t go to the party, but he does wish he ________ there. A) would be B) has been C) would have been D) had been
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【简答题】简述外码的定义。
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【单选题】If it ______ Professor Russel standing up for him, he would have had to leave.
A.
hasn’t been for
B.
hadn’t been for
C.
was for
D.
were for
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【简答题】某海域一艘轮船发生故障，船上雷达搜索附近显示： 军舰：东偏北40度方向300千米处． 货船：西偏北30度方向300千米处． 商船：南偏东o0度方向o50千米处． （1）请根据雷达搜索显示，在平面图上画出他们t位置． （o）如果商船以每小时50千米t速度赶往出事点，需要几小时？军舰想与商船同时赶到，每小时至少行驶得少千米？
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【单选题】若反应 2NH3(g) ≒ N2(g) + 3H2(g) 在某温度条件下的标准平衡常数是0.25,则在该温度下氨合成反应 1/2N2(g) + 3/2H2(g) ≒NH3(g) 的标准平衡常数是( )
A.
4
B.
0.5
C.
1
D.
2
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【单选题】在下列平衡表达式K 1 、K 2 、K 3 的关系是( ) 。 N 2 (g)+3H 2 (g)≒2NH 3 (g) K 1 N 2 (g)+ H 2 (g)≒NH 3 (g) K 2 N 2 (g)+H 2 (g)≒ NH 3 (g) K 3
A.
K 1 = K 2 = K 3
B.
K 1 =2 K 2 =3 K 3
C.
K 1 = K 2 = K 3
D.
K 1 = =
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相关题目：
【单选题】下列关于溶液型气雾剂的叙述错误的是
A.
常选择乙醇、丙二醇作潜溶剂
B.
抛射剂汽化产生的压力使药液形成气雾
C.
药物可溶于抛射剂（或加入潜溶剂）时，常配制成溶液型气雾剂
D.
常用的抛射剂为二氧化碳气体
查看完整题目与答案
【单选题】I could have turned to Mr. Smith for help, but he ______ too busy then.
A.
is
B.
was
C.
should be
D.
has been
查看完整题目与答案
【简答题】请用代码简要描述如何画出自定义短信备份按钮的外层圆圈。
查看完整题目与答案
【简答题】Questions 3 and 4 are based on the news report you have just heard. 3. A) He is a queen bee specialist. B) He works at a national park. C) He removed the bees from the boot. D) He drove the bees away ...
查看完整题目与答案
【简答题】He didn’t go to the party, but he does wish he ________ there. A) would be B) has been C) would have been D) had been
查看完整题目与答案
【简答题】简述外码的定义。
查看完整题目与答案
【单选题】If it ______ Professor Russel standing up for him, he would have had to leave.
A.
hasn’t been for
B.
hadn’t been for
C.
was for
D.
were for
查看完整题目与答案
【简答题】某海域一艘轮船发生故障，船上雷达搜索附近显示： 军舰：东偏北40度方向300千米处． 货船：西偏北30度方向300千米处． 商船：南偏东o0度方向o50千米处． （1）请根据雷达搜索显示，在平面图上画出他们t位置． （o）如果商船以每小时50千米t速度赶往出事点，需要几小时？军舰想与商船同时赶到，每小时至少行驶得少千米？
查看完整题目与答案
【单选题】若反应 2NH3(g) ≒ N2(g) + 3H2(g) 在某温度条件下的标准平衡常数是0.25,则在该温度下氨合成反应 1/2N2(g) + 3/2H2(g) ≒NH3(g) 的标准平衡常数是( )
A.
4
B.
0.5
C.
1
D.
2
查看完整题目与答案
【单选题】在下列平衡表达式K 1 、K 2 、K 3 的关系是( ) 。 N 2 (g)+3H 2 (g)≒2NH 3 (g) K 1 N 2 (g)+ H 2 (g)≒NH 3 (g) K 2 N 2 (g)+H 2 (g)≒ NH 3 (g) K 3
A.
K 1 = K 2 = K 3
B.
K 1 =2 K 2 =3 K 3
C.
K 1 = K 2 = K 3
D.
K 1 = =
查看完整题目与答案