This is my day

    I am a doctor. I work at night. I go to work at 6:30 p. m. I eat dinner at 9:30. I usually go home at 8:00 in the morning. After breakfast, I go to bed at 9:10 a. m. I usually get up at 2:30 in the afternoon. I eat lunch at 3:00 in the afternoon. Then I play sports at 4:00 in the afternoon.

    This is my day. I enjoy my life.

下图为某大陆西岸一段河流在某季节的等潜水位线分布图，此时下列叙述正确的是(    )

某同学用多用电表测量某待测电阻R_X，的阻值，选用“”的欧姆档后，应先进行____，再进行测量，若多用电表的示数如图所示，则R_x的测量值为____Ω．