【单选题】The beginning step of chest assessment is ____.
A.
taking a health history
【单选题】The step-test was given ______.
A.
at the beginning and at the end of the 7-week period
B.
after each exercise period
C.
only at the beginning of the 7-week period
D.
only at the end of the 7-week period
【单选题】The beginning step of chest assessment is .
【多选题】反馈电路根据反馈的极性不同,反馈信号的取样对象不同,以及反馈电路在放大电路的连接方式不同,大致可分为以下几类( )。
【单选题】The beginning step of chest assessment is
【单选题】Step on it or we’ll miss the beginning of the _______.
【单选题】The step-test was given______.
A.
after each exercise period
B.
at the beginning and at the end of the seven weeks period
C.
only once, at the beginning of the seven weeks period
D.
twice to the men in Group A and once to the men in Group B