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【单选题】
胸腺依赖抗原是指A.
在胸腺中产生的
B.
相应抗体是在胸腺中产生的
C.
对此抗原不产生体液性免疫
D.
这种抗原只能引起迟发型反应
E.
针对这种抗原的抗体只有在T细胞辅助下才能产生
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反馈参考答案：
举一反三
【单选题】下列四个试剂,不跟CH 3 CH 2 COCH 2 CH 3 反应的是:
A.
(A) RMgX
B.
(B) NaHSO 3 饱和水溶液
C.
(C) PCl 5
D.
(D) LiAlH 4
【简答题】While still in its early stages, welfare reform has already been judged a great success in many states ?a at least in getting people off welfare. It's estimated that more than 2 million people have le...
【简答题】是现代工业生产的主要能源和动力。
【单选题】Economy, one of the principles of success in the details of housekeeping, consists not alone 【C1】______ making advantageous use of fresh material, but in carefully【C2】______and utilizing the 'left-ove...
A.
of
B.
with
C.
by
D.
in
【简答题】6) The technicians’ support is an important in the success of our research project.
【简答题】In order to be a success in the American business world, you must “get along” with people. You must learn to conduct yourself in such a way _1_ you earn the affection and respect of others._2_ we have...
【简答题】Placebos do not always 1 . The success of this treatment seems to rest a lot 2 the relationship 3 the patient and the doctor. If the patient has a lot of 4 in the doctor and if the doctor really wants...
【单选题】当电源关闭后,下列关于存储器的说法中,正确的是______。
A.
存储在RAM中的数据不会丢失
B.
存储在ROM中的数据不会丢失
C.
存储在U盘中的数据会全部丢失
D.
存储在硬盘中的数据会丢失
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