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【单选题】
结构中含有两个手性碳原子的拟肾上腺素药物是
A.
盐酸麻黄碱
B.
盐酸肾上腺素
C.
盐酸多巴胺
D.
盐酸克伦特罗
E.
盐酸甲氧明
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参考解析：
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举一反三
【单选题】[7.2] [TB-2] 钢筋混凝土大偏压构件的破坏特征是指下列何项 ( )
A.
远离纵向力作用一侧的钢筋拉屈，随后另一侧钢筋压屈，混凝土亦压碎
B.
靠近纵向力作用一侧的钢筋拉屈，随后另一侧钢筋压屈，混凝土亦压碎
C.
靠近纵向力作用一侧的钢筋和混凝土应力不定，而另一侧受拉钢筋拉屈
D.
远离纵向力作用一侧的钢筋和混凝土应力不定，而另一侧受拉钢筋拉屈
查看完整题目与答案
【单选题】以下不属于常见的网络传输介质有
A.
铜缆通信
B.
Wi-fi通信
C.
蓝牙技术
D.
路由器
查看完整题目与答案
【多选题】腹回环的正确要领是？
A.
腹贴杠
B.
后倒迅速
C.
髋贴杠
D.
身体成一根棍
查看完整题目与答案
【单选题】当船体水面下破孔和裂缝较小时，通常属于何种类型的船舱进水？
A.
进水舱被灌满，其舱顶位于水线以下且未破损
B.
进水舱被灌满，其舱顶位于水线以下且已经破损
C.
进水舱未被灌满，舱内外水不相联通
D.
舱顶位于水线以上，舱内外水相联通
查看完整题目与答案
【简答题】Sleeping on a branch was too ___________.
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【单选题】听力原文：W: Dr Manning, do you have a few minuets. I'd like to ask you about this fossil I found. M: Sure Jon. What have you got there? W: Well, it's some kind of shellfish. I thought is might be a brachi...
A.
Ways to determine the age ora fossil
B.
The identity of a fossil the woman found
C.
A comparison of two shellfish fossils
D.
Plans for a field trip to look for fossils
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
A comparison of two shellfish fossils.
C.
The identity of a fossil the woman found.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
The identity of a fossil the woman found.
C.
A comparison of two shellfish fossils.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案
【单选题】听力原文：Q: How do you like to be addressed, as Dr. Black or David? (A) It's up to her to decide. (B) David's fine. (C) To the address listed on top. (12)
A.
B.
C.
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
The identity of a fossil the woman found.
C.
A comparison of two shellfish fossils.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案
相关题目：
【单选题】[7.2] [TB-2] 钢筋混凝土大偏压构件的破坏特征是指下列何项 ( )
A.
远离纵向力作用一侧的钢筋拉屈，随后另一侧钢筋压屈，混凝土亦压碎
B.
靠近纵向力作用一侧的钢筋拉屈，随后另一侧钢筋压屈，混凝土亦压碎
C.
靠近纵向力作用一侧的钢筋和混凝土应力不定，而另一侧受拉钢筋拉屈
D.
远离纵向力作用一侧的钢筋和混凝土应力不定，而另一侧受拉钢筋拉屈
查看完整题目与答案
【单选题】以下不属于常见的网络传输介质有
A.
铜缆通信
B.
Wi-fi通信
C.
蓝牙技术
D.
路由器
查看完整题目与答案
【多选题】腹回环的正确要领是？
A.
腹贴杠
B.
后倒迅速
C.
髋贴杠
D.
身体成一根棍
查看完整题目与答案
【单选题】当船体水面下破孔和裂缝较小时，通常属于何种类型的船舱进水？
A.
进水舱被灌满，其舱顶位于水线以下且未破损
B.
进水舱被灌满，其舱顶位于水线以下且已经破损
C.
进水舱未被灌满，舱内外水不相联通
D.
舱顶位于水线以上，舱内外水相联通
查看完整题目与答案
【简答题】Sleeping on a branch was too ___________.
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minuets. I'd like to ask you about this fossil I found. M: Sure Jon. What have you got there? W: Well, it's some kind of shellfish. I thought is might be a brachi...
A.
Ways to determine the age ora fossil
B.
The identity of a fossil the woman found
C.
A comparison of two shellfish fossils
D.
Plans for a field trip to look for fossils
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
A comparison of two shellfish fossils.
C.
The identity of a fossil the woman found.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
The identity of a fossil the woman found.
C.
A comparison of two shellfish fossils.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案
【单选题】听力原文：Q: How do you like to be addressed, as Dr. Black or David? (A) It's up to her to decide. (B) David's fine. (C) To the address listed on top. (12)
A.
B.
C.
查看完整题目与答案
【单选题】听力原文：W: Dr Manning, do you have a few minutes? I'd like to ask you about this fossil I found. M: Sure. What have you got there? W: Well, it's some kind of shellfish. I thought it might be a brachiopod...
A.
Ways to determine the age of a fossil.
B.
The identity of a fossil the woman found.
C.
A comparison of two shellfish fossils.
D.
Plans for a field trip to look for fossils.
查看完整题目与答案