测量仪器的准确度是一个定性慨念,在实际应用中应该用测量仪器的()表示其准确程度。
A、测量值
B、准确度等级
C、最大允许误差
D、测量误差
参考答案:B, C
The idea of cloning extinct dinosaurs _____ a mixture of fear and excitement into people’s hearts, as evidenced by the popularity of Jurassic Park.
A.knocked
B.hit
C.struck
D.beat
CRH1的Tb车主变压器设有()牵引绕组。
A.1个
B.2个
C.3个
D.4个