X线发生效率的公式是().
A.η=KZU
B.η=KZ/U
C.H=KZ2U
D.rl=KZU2
E.η=K2ZU
参考答案:A
At that time, the movie “Shaolin Temple”, _________Li Lianjie plays the starring role, drew the world’s attention to Chinese Kungfu.
A.where
B.when
C.that
D.which
细胞因子测定的临床应用是()
A.特定疾病的辅助诊断
B.评估机体的免疫状态,判断治疗效果及预后
C.临床疾病的治疗应用
D.临床疾病的预防应用
E.以上都是