一项吸烟与肺癌的前瞻性队列研究的结果如下根据上表计算得到的相对危险度RR为
()
A.11.6
B.53.0
C.63.0
D.0.91
E.1.09
参考答案:A
In the history of Chinese revolution, Taierzhuang Battle was a ________ battle in which both sides suffered heavy losses.
A.strong
B.fierce
C.hot
D.peaceful
美发师在与顾客交谈时,语言要亲切,说话要清晰,以顾客听清楚为宜,答话要()。
A.不慌不乱
B.讲普通话
C.文明礼貌
D.迅速准确