The artist spent years on his monumental painting, which covered the whole roof of the church, the biggest in the country.

A．archaic

B．sentimental

C．outstanding

D．entire

设手电筒的电池电压为3V，电珠的电阻为20欧姆，则流过电珠的电流为（）毫安。

A.150

B.100

C.200

D.180