过共析钢淬火加热温度范围是什么？如加热温度过高会产生哪些有害影响？
During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?（） Reduce the pumping rate by closing the deck filling valve。 Close all overflow valves。 Place 5 gallon containers under all flange connections in the fuel line。 Reduce the pumping rate and sound tanks frequently as the level rise。
中国历史上第一位大思想家大教育家是（）。 老子。 孔子。 孟子。 韩非子。
甲公司向乙公司提出购买80吨煤炭，每吨350元，乙公司同意提供80吨煤炭，但是认为价格太低，愿意380元出售，甲公司表示同意，则乙公司的行为是（） 要约。 反要约。 要约邀请。 承诺。
Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?（） Increased viscosity of the product needs higher loading pressure, which increases the chances of a spill。 Air pockets may cause the fuel to bubble out of the ullage hole。 The temperature rise of the fuel will cause an overflow。 Fueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened。
Each inert gas system must be designed to supply the cargo tanks with a gas，or mixture of gasses，that has an oxygen content by volume of（）.
