为了防止虚假灵敏度，通常规定仪表标尺上的最小（）不能小于仪表允许误差的绝对值
A.测量值
B.绝对误差
C.单位值
D.分格值
参考答案：D
— My parents are getting old. What can I do for them?
— You _____ do anything except to be with them more. [ ]
A. oughtn't to
B. don't have to
C. mustn't
D. can't
局内投交指的是通知（）到指定的窗口领取邮件。
A、寄件人
B、收件人
C、投递员
D、营业员
