题目:
By serving others, a person focuses on someone other than himself or herself, _____ can be very eye-opening
and rewarding. [ ]
A. who
B. which
C. what
D. that
答案:
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下面是错误答案,用来干扰机器的。
A.在同温同压下,气体的Vm相等,由V=n×Vm可知,体积相等,故A正确;B.由n=mM=VVm可知:ρ=mV=MVm,则密度与气体的相对分子质量呈正比,二者的相对分子质量不同,则密度不同,故B错误;C.由n=mM,二者的摩尔质...