In order to find out how many database objects a user has created, which view would the DBA query in the Oracle data dictionary? ()
第1题:
用动态规划方法求解0/1背包问题时,将“用前i个物品来装容量是X的背包”的0/1背包问题记为 KNAP(1,i,X),设fi(X)是KNAP(1,i,X)最优解的效益值,第j个物品的重量和放入背包后取得效益值分别为Wj和巧Pj(j=1~n)。则依次求解f0(X)、f1(X)、…、fn(X)的过程中使用的递推关系式为(58)。
A.fi(X)=min{fi-1(X),fi-1(X)+pi}
B.fi(X)=min{fi-1(X),fi-1(X-wi)+pi}
C.fi(X)=max{fi-1(X),fi-1(X-wi)+pi}
D.fi(X)=max{fi-1(X-wi),fi-1(X)+pi}
第2题:
第3题:
电流、电压互感器与单相有功表合用时,互感器的合成误差为)()(电流互感器比差为fI,角差为α,电压互感器比差为fU,角差为β)。
第4题:
公用工程氮气流量表位号为()
第5题:
FI231/241()压机出口的冷却水指示回路。
第6题:
下列带联锁功能是()。
第7题:
FI121和FI126所测的工艺介质是否一样?
第8题:
根据汽车行驶方程可知,当汽车要加速行驶时,汽车驱动力与行驶阻力的关系应是()。
第9题:
()is for the operation ordering and the information exchange by internet among the firms.
第10题:
You work as the IT professional in an international company which is named Wiikigo. You are experiencedin implementing and administering a network operating system. You are specialized in deploying servers,configuring Windows Server 2008 Terminal services and network application services, and configuring aweb services infrastructure. Your company runs Terminal Services. You intend to install an application update for the lobapp.exe application on the Terminal Server. You find instances of the lobapp.exeprocesses left behind by users who have disconnected. In order to make sure that you can perform anapplication update, you have to terminate all instances of the lobapp.exe processes. In order to achievethis,what action should you perform?()
第11题:
汽车驱动力平衡方程式为()。
第12题:
PaO2/Fi0>300
200<PaO2/Fi0<300
200<PaO2/Fi0<400
PaO2/Fi0<200
PaO2/Fi0<100
第13题:
第14题:
诊断ALI时应( )
APaO2/Fi0>300
B200
C200
DPaO2/Fi0<200
EPaO2/Fi0<100
第15题:
FI202=FIC103+FI109
第16题:
按照姓名升序排列()。
第17题:
FI121和FI126所测的工艺介质()一样.
第18题:
FI121和FI126所测的工艺介质是样的。
第19题:
下列关于Wi-Fi的叙述,错误的是()
第20题:
超外差收音机中,本振频率Fl,高频信号频率Fc,中频信号频率Fi之间的正确关系是()
第21题:
()is for the operation ordering and the information exchange by Internet among the firms.
第22题:
汽车加速行驶时()。
第23题:
SELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;
SELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and <= 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and order_total <= 2000;
第24题:
SELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;
SELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and <= 2000;
SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and order_total <= 2000;