题目内容
（请给出正确答案）
[主观题]
My sister has recently got a job as a （reception) ______ in a hotel.
My sister has recently got a job as a (reception) ______ in a hotel.
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下列字母表示的组合，错误的是
A、感光度--S
B、平均斜率--V
C、最大斜率--γ
D、本底灰雾--Dmin
E、最大密度--Dmax
