以下哪项会引起本站的泵停运()
A.泵入口压力超低
B.出口汇管压力超高
C.出站压力超高
D.以上全是
参考答案:D
--Why didn’t you come to Simon’s party last night?
---I wanted to, but my mom simply _________ not let me out so late at night.
A.could
B.might
C.would
D.should
21-三体综合征患儿,哪种核型的相貌可很像正常人
A.46,XX(或XY),-14,+t(14q21q)B.46,XX(或XY),-21,+t(21q21q)C.46,XX(或XY)/47,XX(或XY),+21D.47,XX(或XY),+21E.46,XX(或XY),-13,+t(13q21q)