微机、微电子交流计数电码轨道电路在送、受电端引接线电阻（包括电缆电阻）应不大于（）。
A、0.2Ω
B、0.3Ω
C、0.4Ω
D、0.5Ω
参考答案：D
She doesn't feel well today. She has a headache and _______.[ ]
A. She should lie down and rest
B. She should have some medicine
C. She should see a doctor
D. All above.
