流量仪表在现场使用的测量总误差是()的合成。
A.基本误差和附加误差
B.基本误差和引用误差
C.引用误差和附加误差
D.示值相对误差和测量误差
参考答案:A
It _____ quite a few years _____ the accused was declared innocent and set
free.
A.was; since
B.is; that
C.will be; when
D.was; before
患者,女,50岁。因牙周病拔除已3个月余,余留牙正常。可摘局部义齿修复时,两侧基牙同位体应采用()
A.联合卡环
B.对半卡环
C.延伸卡环
D.RPI卡环
E.三臂卡环