发动机点火和启动电门有哪些选择位置?()
A、1,2
B、1,BOTH,2
C、GND,OFF,CONT,FLT
D、GND,AUTO,OFF,CONT,FLT
参考答案:D
指出不属于肺循环改变的肺部病变是()
A.肺充血
B.肺淤血(含肺水肿)
C.肺出血
D.肺血减少
E.肺动脉高压
—_______ does it take to go to the zoo on foot?
— About half an hour, I think. [ ]
A. How far
B. How long
C. How many
D. How much