关于X线滤过的叙述,错误的是
A、固有滤过一般用铝当量表示C
暂无解析
舆论学的创始人是()
Thevolleyballmatchwastelevised________onCCTV.
TheNetherlandsistheonlycountryinEuropewhichpermitseuthanasia,________itisnottechnicallylegalthere.
WehavenoticedtheDutchproducers______ajointventureagreementwithChinesefirms.
Comparedwiththe_____periodlastyear,averagetemperatureshavebeenlow.