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【单选题】
The existence of liquids in partially full tanks or compartments of a ship causes a virtual rise in the height of the ().
A.
metacenter
B.
center of buoyancy
C.
center of flotation
D.
center of gravity
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【单选题】将NO3-＋Zn＋OH－＋H2O→NH3＋Zn（OH）42-配平后，离子方程式中H2O的系数是（）
A.
2
B.
4
C.
6
D.
8
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【单选题】饮片用适宜溶剂提取,蒸去部分溶剂,调整浓度至每1ml相当于原药材1g的液体制剂是( )
A.
煎膏剂
B.
酒剂
C.
酊剂
D.
浸膏剂
E.
流浸膏剂
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【简答题】反应[Zn(NH3)4]2++4OH一→[Zn(OH) 4]2一+4NH3的平衡常数为 _________。已知K稳[Zn(OH)4]2-=3×1015，K稳[Zn(NH3)4]2+
查看完整题目与答案
【单选题】The manager told us that _______ careful we are, ________ mistakes we’ll make.
A.
the most; the fewest
B.
more; fewer
C.
the many; the few
D.
the more; the fewer
查看完整题目与答案
【简答题】已知K s ([Zn(OH) 4 ] 2- )=3.0×10 15 ，K s ([Zn(NH 3 ) 4 ] 2+ )=2.9×10 9 ，K b (NH 3 ·H 2 O)=1.8×10 -5 。
查看完整题目与答案
【单选题】of us enjoy the work, and the work is finished.We are students. [     ]
A.
Most, mostly, almost
B.
Most, most, almost
C.
Most, almost, mostly
D.
Mostly, almost, most
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【简答题】根据质子酸碱的定义，下列物质既是质子酸，又是质子碱的是 (A) zn 2+ (B) (C) Zn(H 2 O) 2 (OH) 2 (D)
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【简答题】患者，男性，45岁。因'双侧渐进性鼻塞2年，左颜面部肿胀3日'就诊，3日前患者受凉后鼻塞加重，伴左颜面部肿胀疼痛、脓涕，不伴发热，不伴视力下降，体检见患者双侧鼻腔满布荔枝样带蒂新生物，质韧，双侧下鼻道脓性分泌物，左颜面部肿胀明显，左眼睑为甚，触之疼痛，既往'鼻炎'病史30余年，该患者最可能的诊断为A、鼻息肉 B、慢性鼻窦炎 C、急性鼻窦炎 D、鼻息肉慢性鼻窦炎 E、鼻息肉急性鼻窦炎 F、鼻腔鼻窦恶...
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【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys (1)_____ about 85% of all youth homicides, and in those cases about 90% (2)_____ a pattern in whic...
A.
complete
B.
commit
C.
submit
D.
perform
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【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys 【C1】______ about 85% of all youth murderers, and in those cases about 90% fall within a pattern 【C...
A.
complete
B.
commit
C.
submit
D.
perform
查看完整题目与答案
相关题目：
【单选题】将NO3-＋Zn＋OH－＋H2O→NH3＋Zn（OH）42-配平后，离子方程式中H2O的系数是（）
A.
2
B.
4
C.
6
D.
8
查看完整题目与答案
【单选题】饮片用适宜溶剂提取,蒸去部分溶剂,调整浓度至每1ml相当于原药材1g的液体制剂是( )
A.
煎膏剂
B.
酒剂
C.
酊剂
D.
浸膏剂
E.
流浸膏剂
查看完整题目与答案
【简答题】反应[Zn(NH3)4]2++4OH一→[Zn(OH) 4]2一+4NH3的平衡常数为 _________。已知K稳[Zn(OH)4]2-=3×1015，K稳[Zn(NH3)4]2+
查看完整题目与答案
【单选题】The manager told us that _______ careful we are, ________ mistakes we’ll make.
A.
the most; the fewest
B.
more; fewer
C.
the many; the few
D.
the more; the fewer
查看完整题目与答案
【简答题】已知K s ([Zn(OH) 4 ] 2- )=3.0×10 15 ，K s ([Zn(NH 3 ) 4 ] 2+ )=2.9×10 9 ，K b (NH 3 ·H 2 O)=1.8×10 -5 。
查看完整题目与答案
【单选题】of us enjoy the work, and the work is finished.We are students. [     ]
A.
Most, mostly, almost
B.
Most, most, almost
C.
Most, almost, mostly
D.
Mostly, almost, most
查看完整题目与答案
【简答题】根据质子酸碱的定义，下列物质既是质子酸，又是质子碱的是 (A) zn 2+ (B) (C) Zn(H 2 O) 2 (OH) 2 (D)
查看完整题目与答案
【简答题】患者，男性，45岁。因'双侧渐进性鼻塞2年，左颜面部肿胀3日'就诊，3日前患者受凉后鼻塞加重，伴左颜面部肿胀疼痛、脓涕，不伴发热，不伴视力下降，体检见患者双侧鼻腔满布荔枝样带蒂新生物，质韧，双侧下鼻道脓性分泌物，左颜面部肿胀明显，左眼睑为甚，触之疼痛，既往'鼻炎'病史30余年，该患者最可能的诊断为A、鼻息肉 B、慢性鼻窦炎 C、急性鼻窦炎 D、鼻息肉慢性鼻窦炎 E、鼻息肉急性鼻窦炎 F、鼻腔鼻窦恶...
查看完整题目与答案
【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys (1)_____ about 85% of all youth homicides, and in those cases about 90% (2)_____ a pattern in whic...
A.
complete
B.
commit
C.
submit
D.
perform
查看完整题目与答案
【单选题】Most of us think we know the kind of kid who becomes a killer, and most of the time we're right. Boys 【C1】______ about 85% of all youth murderers, and in those cases about 90% fall within a pattern 【C...
A.
complete
B.
commit
C.
submit
D.
perform
查看完整题目与答案