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【单选题】
关于胸腺微环境的叙述，下列哪项是错误的？
A.
胸腺的自身发育与胸腺微环境形成无关
B.
能影响表达TCR的T淋巴细胞在胸腺外的发育
C.
对未成熟的胸腺细胞具有调节作用
D.
对骨髓来源的前体细胞具有调节作用
E.
由胸腺基质等组成
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参考答案：
举一反三
【单选题】--- Where is my passport? I remember _______ it here. --- You shouldn't have left it here. Remember _______ it with you all the time.
A.
to put；to take
B.
putting；taking
C.
putting；to take
查看完整题目与答案
【单选题】铁素体与渗碳体两相交替重叠的层片状组织称为( )。
A.
奥氏体
B.
珠光体
C.
贝氏体
D.
马氏体
查看完整题目与答案
【简答题】A: The cashier gave me too much change. What should I have ________(do)?B: You should have __________ (say) something. You shouldn't have ___________ (take) the money.
查看完整题目与答案
【单选题】Where is my passport? I remember _______ it here. You shouldn't have left it here. Remember _______ it with you all the time.
A.
to put;to take
B.
putting;taking
C.
putting;to take
D.
to put;taking
查看完整题目与答案
【单选题】听力原文：M: Just look at my car! I only bought it last week. You shouldn't have been going so fast. W: Well, I am sorry, but it was not my fault. There's a 'stop' sign, you must have missed it. You should...
A.
The woman was driving too fast.
B.
The woman was not careful enough.
C.
The man's car was out of control.
D.
The man didn't stop because he didn't see the sign.
查看完整题目与答案
【判断题】混凝土搅拌时,宜采用石子 、水泥 、砂的投料顺序。
A.
正确
B.
错误
查看完整题目与答案
【简答题】假定要在网络上传送1.5MB的文件。设分组长度为1KB,往返时间RTT=80ms。传送数据之前还需要建立TCP连接的时间,这时间是2*RTT=160ms。试计算在以下几种情况下接收方收完该文件的最后一个比特所需的时间。 (1)数据发送速率为10Mbit/s,数据分组可以连续发送。 (2)数据奉送速率为10Mbit/s,但每发送完一个分组后要等待一个RTT时间才能再发送下一个分组。 (3)数据发送速...
查看完整题目与答案
【单选题】(2012·陕西)—The trip shouldn't take more than an hour. —________.It is at least two hours.
A.
I guess so
B.
That's it
C.
You must be joking
D.
It depends
查看完整题目与答案
【简答题】图纸的规格有 ( )种,分别是( )
查看完整题目与答案
【单选题】—The trip shouldn't take more than an hour. —___.Tt is at least two hours. [     ]
A.
I guess so
B.
That's it
C.
You must be joking
D.
It depeds
查看完整题目与答案
相关题目：
【单选题】--- Where is my passport? I remember _______ it here. --- You shouldn't have left it here. Remember _______ it with you all the time.
A.
to put；to take
B.
putting；taking
C.
putting；to take
查看完整题目与答案
【单选题】铁素体与渗碳体两相交替重叠的层片状组织称为( )。
A.
奥氏体
B.
珠光体
C.
贝氏体
D.
马氏体
查看完整题目与答案
【简答题】A: The cashier gave me too much change. What should I have ________(do)?B: You should have __________ (say) something. You shouldn't have ___________ (take) the money.
查看完整题目与答案
【单选题】Where is my passport? I remember _______ it here. You shouldn't have left it here. Remember _______ it with you all the time.
A.
to put;to take
B.
putting;taking
C.
putting;to take
D.
to put;taking
查看完整题目与答案
【单选题】听力原文：M: Just look at my car! I only bought it last week. You shouldn't have been going so fast. W: Well, I am sorry, but it was not my fault. There's a 'stop' sign, you must have missed it. You should...
A.
The woman was driving too fast.
B.
The woman was not careful enough.
C.
The man's car was out of control.
D.
The man didn't stop because he didn't see the sign.
查看完整题目与答案
【判断题】混凝土搅拌时,宜采用石子 、水泥 、砂的投料顺序。
A.
正确
B.
错误
查看完整题目与答案
【简答题】假定要在网络上传送1.5MB的文件。设分组长度为1KB,往返时间RTT=80ms。传送数据之前还需要建立TCP连接的时间,这时间是2*RTT=160ms。试计算在以下几种情况下接收方收完该文件的最后一个比特所需的时间。 (1)数据发送速率为10Mbit/s,数据分组可以连续发送。 (2)数据奉送速率为10Mbit/s,但每发送完一个分组后要等待一个RTT时间才能再发送下一个分组。 (3)数据发送速...
查看完整题目与答案
【单选题】(2012·陕西)—The trip shouldn't take more than an hour. —________.It is at least two hours.
A.
I guess so
B.
That's it
C.
You must be joking
D.
It depends
查看完整题目与答案
【简答题】图纸的规格有 ( )种,分别是( )
查看完整题目与答案
【单选题】—The trip shouldn't take more than an hour. —___.Tt is at least two hours. [     ]
A.
I guess so
B.
That's it
C.
You must be joking
D.
It depeds
查看完整题目与答案
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