肼屈嗪可能引起的不良反应是：
A．诱发胃或十二指肠溃疡
B．全身性红斑狼疮样综合征
C．诱发心绞痛
D．可诱发精神病
E．水钠潴留
参考答案：B,C,E
Carl likes playing football ________ his brother enjoys playing the piano. [ ]
A. when
B. if
C. since
D. while
全补偿链形悬挂有哪些优点？
