Which action should be taken on receipt of a GMDSS distress alert（）.

A.Read the display screen and/or printout

B.Silence the alarm

C.Listen for any follow up voice/telex transmission on the appropriate frequency

D.All of the above

投标人应填报工程量清单计价格式中列明的所有需要填报的单价和合价，如未填报则 ( )。

A．招标人应要求投标人及时补充

B．招标人可认为此项费用包含在清单中其他单价和合价中

C．招标人应该在开标之前补充

D．投标人可以在中标后提出索赔