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【单选题】
听力原文：W: This is the third time you've been late this week, Mr. Wood. You'll have to do better than that, or your service will not. be needed here. M: It won' t happen again, I assure you. Q: Who was speaking to Mr. Wood? (15)A.
His advisor.
B.
His customer.
C.
His partner.
D.
His boss.
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皮皮学刷刷变学霸
举一反三
【单选题】贴电阻应变片处的应变为600με，电阻应变片的灵敏系数 K=2.0 ，在这个电阻应变片上应产生的电阻变化率是下列哪一项? ( )
A.
1. 2%
B.
0.12%
C.
3%
D.
0.3%
【简答题】贴电阻片处的应变为500/με，电阻片的灵敏系数K=2.0，在这个电阻片上应产生的电阻变化率应是()。 (A) 0.2% (B) 0.4% (C) 0.1% (D) 0.3%