潜水电泵停机后,要每隔()运行一次。
A.7d
B.l0d
C.14d
D.30d
参考答案:C
You must keep ____ in mind _____ your are a student in this school and should obey the school rules.
A.it ; that
B.everything ; which
C.such ; as
D.something; because
根据《素问·举痛论》情志因素可影响人体气机,下列叙述错误的是()。
A.怒则气上
B.喜则气缓
C.悲则气耗
D.恐则气下
E.惊则气乱