(2009? Xiao Ming and Xiao Hong want to use the device shown in the picture to explore the relationship between the heat generated by the conductor and the resistance. Two bottles of kerosene are soaked. After (1) is electrified, the current does work through the resistance wire, generating heat to raise the temperature of kerosene. The heat generated by the current can be judged by observing the reading of the thermometer. In order to accurately reflect the heat generated by current, the mass of kerosene in the two flasks should be equal.

(2) Because the specific heat capacity of kerosene is smaller than that of water, kerosene with the same mass absorbs the same heat than water, and the temperature of kerosene rises much, and the experiment effect with kerosene is more obvious;

(3) According to Joule's law Q=I2Rt, under the same current and energization time, the greater the resistance of the conductor, the more heat is generated.

Therefore, the answer is: (1) is equal;

(2)D；

(3) big.