Coombs 实验用于诊断
A、G-6-PD酶缺乏症B
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Hebecameasuccessfulactor________hisfatherneverwas.
Ourpaymentterms(付款方式)are___,irrevocableletterofcreditforthefullinvoicevalue.()
Johnsonwas________unknownbeforerunningforthepresidency.
ThetheoryoflanguageunderlyingtheGrammar-TranslationMethodwasderivedfrom_____Linguistics.
Young________hewas,hemanagedtomakealivingonhisown.