停车信号应为直发瞬动信号。
参考答案:对
Mr. Smith thought of himself as _______,and this accident had ________ effect on his life.
A.a failure; a
B.failure; an
C.a failure; an
D.failure; the
继发性肾素增高所致继发性醛固酮增多,主要包括以下哪几种疾病()
A.肾动脉狭窄所致高血压
B.高血压病的恶性型
C.肾小球旁细胞肿瘤
D.一侧肾萎缩、结缔组织病
E.肾外肿瘤