一列地铁从一条645米长的隧道通过,这列地铁长75米,每秒行24米。这列地铁几秒可以通过隧道?
(645+75)÷24=30(秒)
可持续发展理念的提出是在( )。
A.1977年B.1987年C.1992年D.1993年
In caring for a client with vasovagal syncope, the nurse should know that the associated temporary loss of consciousness is most commonly related to
A.vestibular dysfunction.
B.sudden vascular fluid shifting.
C.postural hypotension.
D.bradyrhythmia.