下列因素中与唇腭裂的发生可能有关的是()
A.遗传因素
B.孕妇缺乏维生素B2、叶酸
C.黄曲霉素
D.妊娠初期病毒感染
E.母体内异常增高的皮质激素
参考答案:A, B, D, E
Of all the 18th-century novelists ______ was the first to set out, both in theory and practice, to write specially a "comic epic in prose. "
A. Henry Fielding B. Daniel DefoeC. Jonathan Swift D. John Bunyan
NJ07型列车通过主门控器及(),可与车辆内所有门控器进行通信。
A.CAN网
B.MVB网
C.RS485内网
D.以太网