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【单选题】
以下关于抗体与免疫球蛋白(Ig)的描述错误的是
A.
均有浆细胞合成
B.
抗体是生物学功能上的概念
C.
Ig是化学结构上的概念
D.
所用Ig都是抗体
E.
所有的抗体都是Ig
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【单选题】You are answering the phone in a business setting, which of these statements is an example of poor phone etiquette?
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He is not in the office at the moment. Would you like to leave a message?
B.
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I expect her shortly. Would you like to leave a message on her voice mail?
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【单选题】Rhonda received a voice message marked “urgent,” but due to the poor quality of her phones’ speakers, she was not able to understand the message. Which barrier to listening does this problem represen...
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B.
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【单选题】You are answering the phone in a business setting, which of these statements is an example of poor phone etiquette?
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【单选题】Rhonda received a voice message marked “urgent,” but due to the poor quality of her phones’ speakers, she was not able to understand the message. Which barrier to listening does this problem represen...
A.
communication channel barrier
B.
attitudinal barrier
C.
message overload
D.
preoccupation
查看完整题目与答案
【简答题】图中,精密水准尺的最终读数为 厘米。
查看完整题目与答案
【判断题】设圆周【图片】和椭圆周【图片】均为逆时针方向，则向量场【图片】通过【图片】和【图片】的流量相等，均为【图片】.
A.
正确
B.
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查看完整题目与答案