再保险是指投保人与保险人直接签订保险合同而建立保险关系的一种保险。()
参考答案:错
Everything comes with price;there is no such thing as free lunch in the world.
A.a,a
B.the, /
C.the, /
D.a, /
凝汽器和排汽缸有()和()两种连接方式。