鸭的祖先是绿头野鸭,中国鹅的祖先是(),欧洲鹅和中国伊梨鹅的祖先是()。
参考答案:鸿雁;灰雁
.
---Does Bill do his new job well ?
------_______his old job . I'm afraid there is no hope for him .
A.Not better than
B.No better than
C.Not so well as
D.No less than
下列属于持枪人员管理责任制度的内容的有()
A.武装押运保安员训练、考核、办理《持枪证》制度
B.使用枪支报告制度
C.持枪人员出枪、举枪、收枪
D.使用枪支的原则
E.车长、保安员领导枪支弹药的验枪方法