单项选择题 With reference to the requirements under IMO MODU CODE，Operating manuals containing guidance for the safe operation of the MODU unit for both normal and envisaged emergency conditions， to the satisfaction of the Administration should be provided on board and be readily available to all concerned. The manuals should， in addition to providing the necessary general information about the unit， contain guidance on and procedures for the operations that are vital to the safety of personnel and the unit.The operating manual for normal operations should include the following general descriptive information（）

单项选择题 根据《国际海上人命安全公约》第Ⅱ-1章，第48条，第1节的要求，周期性无人值班机器处所的舱底污水井的位置和监测，应使液体的积聚在何时能够探知：（）

单项选择题 下列哪项是国际通岸接头标准尺寸（）