发生奥氏体转变时,第一批奥氏体在珠光体和渗碳体的界面处产生。()
参考答案:对
酸碱失衡中哪一项是错误的:()
A.代谢性酸中毒
B.代谢性碱中毒
C.水中毒
D.呼吸性酸中毒
E.呼吸性碱中毒
A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?().
A.The tank lie above the waterline and are filled
B.The tank are partically filled with dry cargo
C.The tanks are partially filled with liquid cargo
D.The tanks are filled and lie below the waterline