直线AB上有一点C,直线AB外有一点P,由A、B、C、P四点可以确定______条线段.
如图所示:
任意找到两点,即可得出有线段:AC、AB、BC、PA、PB、PC六条.
Leaders from different parts of the world took part
in the discussion the international treaty.
A.which leads to
B.leading to
C.led to
D.led to have
水和钠同时缺失,但缺水少于失钠,称为()
A.等渗性缺水
B.高渗性缺水
C.低渗性脱水
D.原发性缺水