皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【单选题】
产生温室效应的原因主要是大气中含有大量的
A.
SO2
B.
NO2
C.
CO2
D.
CO
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】What is the objective of a command economy?
A.
Private property is restrained by a set of oligations that individuals owe to the community.
B.
The government allocates resources for the best benefits of the society.
C.
Things don't change much in the command economy.
D.
Distribution and investment are based on sypply and demand.
【单选题】在窗体上画—个名称为Command1的命令按钮,然后编写如下事件过程: Private Sub Command1_click() Dim a As Integer,s As Integer a=8 s=1 Do s=s+a a=a-1 Loop While a<=0 Print s;a End Sub 程序运行后,单击命令按钮,则窗体上显示的内容,是 ______。
A.
79
B.
340
C.
97
D.
死循环
【单选题】What is the implication of this command?()
A.
The command produces an error because the retention time cannot be reduced.
B.
All historical data is retained but the subsequent flashback data archives are maintained for only three years.
C.
All historical data is purged and the new flashback data archives are maintained for three years.
D.
All historical data older than three years is purged from the flashback archive FLA1.
【单选题】下面不属于食叶害虫的是
A.
蝗虫
B.
叶甲
C.
地老虎
D.
粘虫
【单选题】主板上标有 POWER.LED 的地方,指的是 针座。
A.
扬声器/蜂鸣器
B.
电源指示灯
C.
硬盘运行指示灯
D.
电源开/关
【简答题】一片稻田就是一小小的生态系统,这里有少许杂草与水稻争夺着阳光、养料、水分和空间,蝗虫、三化螟在稻秧上取食,青蛙是忠实的田园卫士,一旦发现害虫,会迅速地将其捕获…… (1)阳光、养料、水分等都能影响水稻的生长,它们属于___________因素。杂草与水稻争夺阳光、养料、水分等,说明二者之间存在着____关系。 (2)从获得途径看,青蛙捕食蝗虫,三化螟等害虫的行为属于__________行为。如果人...
【单选题】What accurately describes the usage of a Cisco AutoQoS command?()
A.
on Catalyst switches, the show auto discovery qos command is used to display the data collected during the Auto-Discovery phase
B.
on Catalyst switches, the show auto qos command is used to display packet statistics of all classes that are configured for all service policies
C.
on Cisco routers, the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuing
D.
on Cisco routers, the show auto qos command is used to display the AutoQoS interface templates, policy maps, class maps, and ACLs
【简答题】(7)在窗体上画1个名称为Command 1的命令按钮,然后编写如下程序: Private Sub Command 1 Click() Dim m As Integer, x As Integer Dim flag As Boolean flag=False n=Val(InputBox('请输入任意1个')) Do While Not flag a=2 flag=【7】 Do While ...
【单选题】Consider this RMAN command:   RMAN> CONFIGURE RETENTION POLICY CLEAR;   What is the effect of this command?()
A.
Backups will never expire.
B.
It removes any retention policy.
C.
The DELETE OBSOLETE command will fail with an error.
D.
It sets the retention policy to the default of REDUNDANCY 1.
【单选题】关于舷侧外板厚度的描述,下列正确的是:1船中部较厚,向两端渐薄;2靠近舭列板附近的舷侧列板要比上面的厚一些;3船中0.4L区域内的舷顶列板比相邻的舷侧列板厚
A.
①②
B.
①③
C.
②③
D.
①②③
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题