早晨6点整,时针和分针所成的角是______角.
6点整,分针和时针的夹角的度数:30°×6=180°,
所以早晨6点整,分针和时针成一个平角;
故答案为:平.
Heads from different countries gathered in Amsterdam and President Xi jinping _____ a speech on nuclear safety.
A.stated
B.issued
C.delivered
D.addressed
预计某地区某类房地产的需求不变,但开发成本趋升,供给量趋增,则预计其价格会( )。
A.上升
B.下降
C.不变
D.升降难定