多巴胺在治疗休克时所起的作用,错误的是()
A.增加心排出量
B.扩张肾动脉
C.加强心肌收缩力
D.收缩肠系膜动脉
E.对四肢小动脉起收缩作用
参考答案:D
She has set a new record, that is, the sales of her latest book ________ 50 million.
A.have reached
B.has reached
C.are reaching
D.had reached
当客房服务员清扫房间用钥匙开门时,应做到()。
A.把房间全部打开
B.把无人的房间全部打开
C.随便开几间
D.清扫一间开一间