An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?() 正确。 错误。
下列说法表明是右图中的地理事物的是() 正确。 错误。
与动力集中型动车组相比,动力分散型动车组的优点之一,是牵引力分散在各个动力车轮上,可解决高速动车组大牵引力与轴重限制之间的矛盾。 正确。 错误。
与方波逆变相比,PWM逆变的优点是输出基波电压有效值高。 正确。 错误。
An oiler was badly burned and you are communicating with a passenger ship that has a doctor and hospital on board. You want to rendezvous in a certain position so the oiler can be evacuated for medical treatment. Which code should your message contain?() 正确。 错误。
动车组PWM电机逆变器在中高速段通常采用异步调至方式。