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【单选题】
以下不属于数据库系统(DBS)组成部分的有( )。A.
用户
B.
数据库集合
C.
数据库管理系统及相关软件
D.
操作系统
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】在生物膜法处理废水系统中,出水回流的主要作用是( )。
A.
保证生物膜反应器的污泥浓度维持在一定范围；
B.
为了回流硝酸盐，以保证脱氮效率；
C.
提高生物膜反应器的水力负荷，加大水流对生物膜的冲刷作用，更新生物膜；
D.
为了使含磷污泥充分释放。
【单选题】Proper street behavior. in the United States requires a nice balance of attention and inattention. You are supposed to look at a 【21】______ just enough to show that you're 【22】______ of his presence. ...
A.
friend
B.
foreigner
C.
passerby
D.
stranger
【简答题】关于女性尿道正确的是() A、长约5cm B、穿过盆膈 C、经阴道前方向下 D、仅为排尿器官 E、开口于阴道前庭
【单选题】Proper street behavior. in the United States requires a nice balance of attention and inattention. You are supposed to look at a 【21】______ just enough to show that you are 【22】______ of his presence....
A.
friend
B.
foreigner
C.
passerby
D.
stranger
【单选题】Proper behavior is the way to ______ in a certain situation.
A.
act
B.
talk
C.
show
D.
help
【简答题】A．Proper behavior. in situations. B．The limitations of eye contact. C．The exchange of ideas through eye contact. D．The role of eye contact in interpersonal communication.
【单选题】Proper street behavior. in the United States re quires a nice balance of attention and inattention. You are supposed to look at a【B1】just enough to show that you are【B2】of his presence. If you look to...
A.
friend
B.
foreigner
C.
passerby
D.
stranger
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