【单选题】用标示值为 25mL 的移液管准确移出溶液的体积应记录为( )
【单选题】合同终止以后当事人应当遵循保密和忠实等义务,此种义务在学术上称为后契约义务。此种义务的依据是( )。
【单选题】What is true of the past definitions of happiness?
A.
They were based on self-gratification.
C.
They were based on lifestyles.
【单选题】小决明区别于决明子的性状特征是
D.
个较小,长3~5mm,棱线两侧各有一条宽广的浅黄色色带