选用光源应具有较好的光色、较高的发光效率及较长的寿命。( )
参考答案:对
It has been made __________ public that anyone who does harm to the environment in __________ public places will be blamed by __________ public.
A.the, the, the
B./;the; the
C./; /; the
D.the; /; the
心肺复苏时,气管内注射肾上腺素的剂量是()
A.0.5~0.6mg/kg
B.0.01~0.02mg/kg
C.0.05~0.06mg/kg
D.0.3~0.4mg/kg
E.0.1mg/kg