装盘时,先上桌的物品在上、在前,后上桌的物品在下、在后。
A. 对
B. 错
所托物品要避开自己的鼻口部位。端托中需要讲话时,应将托盘托至身体的左外侧,避开自己的正前位。
A. 对
B. 错
The word corona in Latin means________.
A. spiked
B. jagged
C. crown
D. protein
Although there are hundreds of coronaviruses, only ________currently infect humans.
A. ten
B. seven
C. five
D. four