废除丞相制度后,明朝在皇帝和六部之间逐步建立的官制是[ ]
A.内阁
B.军机处
C.三司
D.枢密院
答案:A
Mr.Black works in a restaurant. He is often very because there are
always lots of things to do. [ ]
A.free
B.dangerous
C.be
D.busy
绝对压力与表压力的关系是()。
A.p绝=p表
B.p绝=p表+大气压力
C.p绝=p表-大气压力
D.无直接联系