秦始皇在全国范围内确立了封建主义中央集权制度。中央集权是指[ ]
A.统一货币、度量衡
B.车同轨,书同文
C.规定皇权至高无上
D.中央机构对地方机构实行直接有效的管理
答案:D
___ the safety of gas, the government has checked the city's gas supply system thoroughly. [ ]
A. Having ensured
B. Ensuring
C. To ensure
D. Ensured
以口苦咽干,目眩,寒热往来,胸胁苦满为主要表现的证候是()
A.太阳中风证
B.太阳伤寒证
C.阳明经证
D.少阳病证
E.阳明腑证