精度是指传感器的测量输出值与实际被测量值之间的误差。
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使用外部传感器,使得机器人对外部环境具有一定程度的适应能力
A. 对
B. 错
Up to now, we _______ any news from her.
A. have not received
B. did not receive
C. had not received
D. not receive
I had intended to call on you, but someone ______ to see me.
A. come
B. came
C. had come
D. did come
I have worked here since I _________ from college.
A. will graduate
B. graduate
C. graduated
D. is graduated
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