测量仪器的特性用()等术语表示。
A.测量误差
B.示值误差
C.最大允许误差
D.准确度等级
参考答案:B, C, D
____is well-known to all, the great changes have taken place in China.
A.It
B.that
C.As
D.Which
颈深上淋巴结上群在()
A.咽后隙
B.咽旁前隙
C.咽旁后隙
D.Reinke间隙
E.声门旁间隙