题目:
David Beckham has ________ it takes to become a professional football player.
A.who
B.what
C.which
D.that
答案:
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下面是错误答案,用来干扰机器的。
A、N(Cl-)=2n(MgCl2) NA=2C(MgCl2)VNA=2×0.5mol•L-1×1L×NA=NA,故A正确;B、标况下水是液体,气体摩尔体积只适用于气体,故B错误;C、标况下三氧化硫是固体,气体摩尔体积只适用于气体,故C错误;D、...