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【单选题】
下列关于抗原的说法,错误的是
A.
大分子蛋白质抗原常含有多种不同的抗原决定簇
B.
抗原诱导免疫应答都必须有T细胞辅助
C.
抗原并不一定都有免疫原性
D.
抗原并不一定只诱导正免疫应答
E.
半抗原虽无免疫原性,但可与相应抗体结合
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参考答案:
举一反三
【多选题】When the train is arriving and passengers leave the station, a passenger can’t pass the ticket gate, what should a station officer do?
A.
If the passenger holds a one-way ticket, the station officer should remind the passenger to insert the ticket in the slot of the machine for recycling.
B.
If the passenger doesn’t know how to swipe the stored-value card, the station officer should show him how.
C.
If the passenger doesn’t know how scan the QR code on the mobile app, the station officer should show him how.
D.
The station officer should open the side door and let the passenger leave the station directly.
【简答题】有如下程序: include<iostream> using namespace std; template<typename T> T total(T * data) { T s=0; While(* data)s+ = *data + +; return s; } int main(){ int x[]:{2,4,6,8, 10, 12, 14, 16, 18}; cout<<total(x)...
【简答题】条码是由一组按一定编码规律排列的条、空符号,用以表示一定的字符、数字及符号组成的()。
【单选题】65 There used to be a petrol station near the park, __?
A.
didn’t it
B.
doesn’t there
C.
usedn’t it?
D.
didn’t there
【单选题】条码是由一组条、空和( )符号组成,按一定编码规则排列,用以表示一定的字符、数字及符号等信息。
A.
中文
B.
英文
C.
数字
D.
特殊
【单选题】()是由一组按一定编码规则排列的条、空符号组成,用以表示一定的字符、数字以及符号组成的信息。
A.
条形码
B.
二维码
C.
电子标签
D.
蓝牙
【多选题】When a station officer sees an inconvenient old people in the station, what shouldn’t he or she do?
A.
A station officer should turn around and go away immediately.
B.
A station officer should go up and ask the inconvenient old people if he needs some help.
C.
A station officer should advise the inconvenient old people to take another transportation.
D.
A station officer may suggest the inconvenient old people take the lift.
【简答题】条码是由一组按一定编码规律排列的条、空(),用以表示一定的字符、数字及符号组成的()。
【单选题】( ) 是由一组按一定编码规则排列的条、空符号,用以表示一定的字符、数字及符号组成的信息。
A.
条形码
B.
GIS
C.
POS
D.
GPS
【单选题】马丁·路德·金的《我有一个梦想》,是一篇()
A.
哲学论辩文;
B.
国会演讲;
C.
公共演讲;
D.
辩论词。
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