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【单选题】
钠通道阻滞药分为IA,IB,IC三个亚类的依据是
A.
药物对通道产生阻滞作用到阻滞作用解除的时间长短
B.
钠通道阻滞药对钾通道的抑制强度
C.
对动作电位时程的影响
D.
对有效不的影响
E.
根据化学结构特点
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知识点：
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举一反三
【多选题】常见的受弯、剪、扭的构件有（）
A.
雨蓬梁
B.
折梁
C.
吊车梁
D.
现浇框架边梁
E.
柱
查看完整题目与答案
【单选题】听力原文：WA I was just trying to pay my parking fees, and the machine I was using ate my money. It's the machine on the second floor parking deck. MB Huh, that's strange. It's never done that before. Do y...
A.
At a bank
B.
In a parking garage
C.
Near a food vending machine
D.
Next to a public telephone booth
查看完整题目与答案
【单选题】某通信机房设置七氟丙烷预制灭火系统，该系统应由（）种启动方式。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】某通信机房设置七氟丙烷预制灭火系统，该系统应有（）种启动方式
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】听力原文：WA I'm interested in your packaging system, but it's so much more expensive than your competitors'. MB You're right. Our prices are definitely higher than systems from other brands in the same ca...
A.
They are made with high-quality parts.
B.
They come with training and maintenance plans.
C.
They are built according to customer specifications.
D.
They have more functions than systems made by competitors.
查看完整题目与答案
【多选题】下列构件中,属于常见的混凝土受扭构件的为( )。
A.
雨棚梁
B.
中间跨主梁
C.
次梁边跨的主梁
D.
弯梁与折梁等
查看完整题目与答案
【判断题】预制灭火系统应设2种启动方式
A.
正确
B.
错误
查看完整题目与答案
【多选题】下列构件中，属于常见的混凝土受扭构件的有()。
A.
雨棚梁
B.
中间跨主梁
C.
弯梁与折梁等
D.
次梁边跨的主梁
查看完整题目与答案
【单选题】某通讯机房设置七氟丙烷预制灭火系统,该系统应有()种启动方式。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】听力原文：WA Hi. This is Erika Heaton. I'm leaving on vacation soon and I was wondering if you could hold my mail until I get back. MA Sure, we can hold mail at the post office for up to one month. Could I...
A.
On vacation
B.
On a business trip
C.
To an international conference
D.
To study abroad for the summer
查看完整题目与答案
相关题目：
【多选题】常见的受弯、剪、扭的构件有（）
A.
雨蓬梁
B.
折梁
C.
吊车梁
D.
现浇框架边梁
E.
柱
查看完整题目与答案
【单选题】听力原文：WA I was just trying to pay my parking fees, and the machine I was using ate my money. It's the machine on the second floor parking deck. MB Huh, that's strange. It's never done that before. Do y...
A.
At a bank
B.
In a parking garage
C.
Near a food vending machine
D.
Next to a public telephone booth
查看完整题目与答案
【单选题】某通信机房设置七氟丙烷预制灭火系统，该系统应由（）种启动方式。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】某通信机房设置七氟丙烷预制灭火系统，该系统应有（）种启动方式
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】听力原文：WA I'm interested in your packaging system, but it's so much more expensive than your competitors'. MB You're right. Our prices are definitely higher than systems from other brands in the same ca...
A.
They are made with high-quality parts.
B.
They come with training and maintenance plans.
C.
They are built according to customer specifications.
D.
They have more functions than systems made by competitors.
查看完整题目与答案
【多选题】下列构件中,属于常见的混凝土受扭构件的为( )。
A.
雨棚梁
B.
中间跨主梁
C.
次梁边跨的主梁
D.
弯梁与折梁等
查看完整题目与答案
【判断题】预制灭火系统应设2种启动方式
A.
正确
B.
错误
查看完整题目与答案
【多选题】下列构件中，属于常见的混凝土受扭构件的有()。
A.
雨棚梁
B.
中间跨主梁
C.
弯梁与折梁等
D.
次梁边跨的主梁
查看完整题目与答案
【单选题】某通讯机房设置七氟丙烷预制灭火系统,该系统应有()种启动方式。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】听力原文：WA Hi. This is Erika Heaton. I'm leaving on vacation soon and I was wondering if you could hold my mail until I get back. MA Sure, we can hold mail at the post office for up to one month. Could I...
A.
On vacation
B.
On a business trip
C.
To an international conference
D.
To study abroad for the summer
查看完整题目与答案