[单选] 中国第一部脉学著作是（）。

Which of the following represents the emergency signal for fire aboard ship?（） More than six short blasts and one long blast on the whistle。 Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm。 Three short blasts of the whistle supplemented by the same signal on the general alarm。 More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm。 同素异构转变伴随着体积的变化，其主要原因是（） 晶粒度发生变化。 过冷度发生变化。 晶粒长大速度发生变化。 致密度发生变化。 If you are fighting a fire below the main deck of your vessel，which action is most importantconcerning the stability of the vessel? （） Shutting off electricity to damaged cables。 Pumping fire-fighting water overboard。 Maneuvering the vessel so the fire is on the lee side。 Removing burned debris from the cargo hold。 过冷度是金属结晶的驱动力，它的大小主要取决于（） 化学成分。 冷却速度。 晶体结构。 加热温度。 如果交流电流的有效值为100安，则电流最大值为（）安 1.41。 14.1。 141。 1410。 中国第一部脉学著作是（）。