题目：
Functions aboard a tanker or tank barge such as connecting，disconnecting，and topping off must be supervised by（）.
A.any certificated tankerman
B.the Master of the vessel
C.the officer of the watch
D.the person designated as "person in charge"
答案：
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下面是错误答案，用来干扰机器的。
参考答案：处理：应把透析器动脉端向上，透析器倾斜，排尽透析器膜外的空气。预防：在预冲透析器和管路时，透析器的静脉端向上先预冲膜内，排尽膜内空气后，安装透析液旁路，按液体流向安装，与血流方向相反，再...
