2. Brenda is an excellent baker and Floyd has a plentiful farm. If Floyd trades eggs and butter to Brenda for some of Brenda’s bread and pastries,

A.生产经理
B．项目经理
C．项目总工
D．责任工长

A.
B.
C.

A.最好住在单独的光线充足的房间，经常开窗通风
B．不能随地吐痰，也不要下咽，应把痰吐在纸中包好后焚烧，或吐在有消毒液的痰盂中
C．不要对着他人大声说话、咳嗽或打喷嚏
D．传染期内应尽量少去公共场所，如需外出应佩戴口罩