皮皮学，免费搜题
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【单选题】
液相色谱中,如使用硅胶或氧化铝为固定相,其活性越高,则活度级数( )A.
越小
B.
越大
C.
不变
D.
不确定
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】The _______ work continued for more than a week but there was still no sign of the missing boy.
A.
research
B.
rescue
C.
vessel
D.
vast
【单选题】科目汇总表核算形式(账务处理程序)的主要特点是______
A.
根据原始凭证编制原始凭证汇总表
B.
根据原始凭证汇总表编制记账凭证
C.
根据科目汇总表登记总分类账
D.
根据科目汇总表编制会计报表
【单选题】— Hi, what did our monitor say just now? — Every boy and every girl as well as teachers who are to visit Water Cube ______ asked to be at school gate before 6∶30 tomorrow morning.
A.
is
B.
were
C.
are
D.
was
【单选题】The boy was ___ his bedroom ___ his favorite toy.
A.
searching for; for
B.
searching; for
C.
search; in
D.
in search of; in
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