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【单选题】
将 50ml 0.002mol · L — 1 AgNO 3 溶液和 30ml0.0018mol · L — 1 KBr 溶液混合制备 AgBr 溶胶,以下推论中正确的是( )
A.
胶粒带正电
B.
胶粒带负电
C.
胶粒不带电
D.
胶核优先吸附 K +
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【简答题】如图10所示的电路中，电源电压、灯丝电阻都保持不变灯L标有“6 V 3 W”字样，灯泡的电阻_____Ω；当开关S闭合，滑动变阻器的滑片P在a、b两点间移动时，电压表示数的变化范围是5~8 V，且滑片P位于b点时灯L的功率是滑片位于a点时灯L功率的16倍，电源电压是________V。
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【单选题】如图所示电路中,电源电动势E1=E2=6V,内阻不计,R1=R2=R3=3 Ω ,则A、B两点间的电压是 ( )
A.
0
B.
-3V
C.
6V
D.
3V
查看完整题目与答案
【单选题】男性,头痛、发热、咳嗽、咖啡样痰、呼吸急促,诊断为大叶性肺炎,即用青霉素药物治疗,皮试阴性,用药后5分钟,患者胸闷、脸色苍白,冷汗淋漓,考虑青霉素过敏性休克,应立即选用何药抢救
A.
去甲肾上腺素
B.
山莨菪碱
C.
阿托品
D.
肾上腺素
查看完整题目与答案
【单选题】David is the first person ____when you get there [ 定语从句考点 ] A. you can talk to B. you can talk to whom C. whom you cantalk D. who you can talk
A.
1
B.
2
C.
3
D.
4
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【简答题】-Do you know the man ______is talking with your father? -Yes, he’s our head. A. he B. who C. which D. whom 2. Is this the river _____I can swim? A. which B. in which C. that D. the one 3. This i...
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【简答题】连线。 1. What time is it now? 2. Who wants to go shopping today? 3. What does he have? 4. Do you have ears? 5. May I take your picture? A. Sure! B. Yes,I do. C. It's 2:30. D. I do! E. He has a panda.
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【单选题】如题图所示电路中,电源电动势 E 1 =E 2 =6V,内电阻不计,R 1 =R 2 =R 3 =3Ω,则 A、B两点间的电压是( )。
A.
0
B.
-3V
C.
6V
D.
3V
查看完整题目与答案
【单选题】To tell you the truth, everyone, including me, won’t _____ your selfness and rudeness．
A.
fasten
B.
press
C.
suffer
D.
tolerate
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【单选题】The corridors（走廊）was so narrow that I had to myself against the wall to let them pass.
A.
pull
B.
press
C.
defend
D.
prevent
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【单选题】王某,因患扁桃体炎而采用青霉素治疗,给药后1分钟,人面色白、烦躁不安、脉搏细弱血压下降,并伴有呼吸困难,诊断为过敏性休克,应首选下列何药治疗
A.
肾上腺素
B.
麻黄碱
C.
阿托品
D.
间羟胺
E.
去甲肾上腺素
查看完整题目与答案
相关题目：
【简答题】如图10所示的电路中，电源电压、灯丝电阻都保持不变灯L标有“6 V 3 W”字样，灯泡的电阻_____Ω；当开关S闭合，滑动变阻器的滑片P在a、b两点间移动时，电压表示数的变化范围是5~8 V，且滑片P位于b点时灯L的功率是滑片位于a点时灯L功率的16倍，电源电压是________V。
查看完整题目与答案
【单选题】如图所示电路中,电源电动势E1=E2=6V,内阻不计,R1=R2=R3=3 Ω ,则A、B两点间的电压是 ( )
A.
0
B.
-3V
C.
6V
D.
3V
查看完整题目与答案
【单选题】男性,头痛、发热、咳嗽、咖啡样痰、呼吸急促,诊断为大叶性肺炎,即用青霉素药物治疗,皮试阴性,用药后5分钟,患者胸闷、脸色苍白,冷汗淋漓,考虑青霉素过敏性休克,应立即选用何药抢救
A.
去甲肾上腺素
B.
山莨菪碱
C.
阿托品
D.
肾上腺素
查看完整题目与答案
【单选题】David is the first person ____when you get there [ 定语从句考点 ] A. you can talk to B. you can talk to whom C. whom you cantalk D. who you can talk
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【简答题】-Do you know the man ______is talking with your father? -Yes, he’s our head. A. he B. who C. which D. whom 2. Is this the river _____I can swim? A. which B. in which C. that D. the one 3. This i...
查看完整题目与答案
【简答题】连线。 1. What time is it now? 2. Who wants to go shopping today? 3. What does he have? 4. Do you have ears? 5. May I take your picture? A. Sure! B. Yes,I do. C. It's 2:30. D. I do! E. He has a panda.
查看完整题目与答案
【单选题】如题图所示电路中,电源电动势 E 1 =E 2 =6V,内电阻不计,R 1 =R 2 =R 3 =3Ω,则 A、B两点间的电压是( )。
A.
0
B.
-3V
C.
6V
D.
3V
查看完整题目与答案
【单选题】To tell you the truth, everyone, including me, won’t _____ your selfness and rudeness．
A.
fasten
B.
press
C.
suffer
D.
tolerate
查看完整题目与答案
【单选题】The corridors（走廊）was so narrow that I had to myself against the wall to let them pass.
A.
pull
B.
press
C.
defend
D.
prevent
查看完整题目与答案
【单选题】王某,因患扁桃体炎而采用青霉素治疗,给药后1分钟,人面色白、烦躁不安、脉搏细弱血压下降,并伴有呼吸困难,诊断为过敏性休克,应首选下列何药治疗
A.
肾上腺素
B.
麻黄碱
C.
阿托品
D.
间羟胺
E.
去甲肾上腺素
查看完整题目与答案