使用行灯照明时,其电压不应超过()V。
A.2.5
B.24
C.36
D.50
参考答案:C
Daniel is helpful, and he always_______. [ ]
A. thinks of himself first
B. thinks of others first
C. thinks himself first
D. thinks others first
CML的治疗可选择()。
A.脾切除
B.干扰素
C.异基因骨髓移植
D.免疫抑制剂
E.VDP方案