【单选题】An oxygen indicator can be used to determine if there is ______.
A.
sufficient oxygen in a compartment to support life
B.
combustible gases present
C.
hyfrogen gases present
【单选题】The oxygen partial pressure or the amount of oxygen in arterial blood is called:
E.
Oxygen dissociation curve
【单选题】An oxygen indicator will detect _____.
A.
concentrations of explosive gas
B.
an oxygen deficiency in a space
C.
the presence of harmful amounts of carbon monoxide
【单选题】邓小平第一次提出了“三步走”基本实现现代化的战略是在( )。
【单选题】An oxygen indicator will detect ( )
A.
the amount of oxygen in a space
B.
the presence of harmful amounts of carbon monoxide
C.
concentration of explosive gas
【单选题】邓小平第一次提出“三步走”战略是在()。