服务员上茶时应先将茶水泡好,泡茶以70一80度水温为宜,可以保护茶的味道。
参考答案:对
It began with a “self-discovery” process where each of us _______ a series of tests to determine what it is that we truly love doing.
A.put off
B.put through
C.put away
D.put on
在同一被测量的多次测量过程中,以不可预知方式变化的测量误差分量称为(),保持恒定或以可预知方式变化的测量误差分量称为()。