You need to create a table named ORDERS that contain four columns: 1. an ORDER_ID column of number data type 2. aCUSTOMER_ID column of number data type 3. an ORDER_STATUS column that contains a character data type 4. aDATE_ORDERED column to contain the date the order was placed. When a row is inserted into the table, if no value is provided when the order was placed, today's date should be used instead. Which statement accomplishes this? （） [" CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE = SYSDATE);"," CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE DEFAULT SYSDATE);"," CREATE OR REPLACE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE DEFAULT SYSDATE);"," CREATE OR REPLACE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE = SYSDATE);"," CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status NUMBER (10), date_ordered DATE = SYSDATE);"," CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status NUMBER (10), date_ordered DATE DEFAULT SYSDATE)"]
下列不属于物流产业特征的是（） ["现代性","基础性","服务性","综合性"]
A manufacturing customer has a requirement to add 12 additional dual-attached servers to theirexisting two Brocade 16 port SAN switches that have no more ports available. Which of thefollowing should be recommended to accommodate the current capacity requirements, allow forfuture growth and provide 8 and 4 Gb support?（） ["two SAN16B ","two SAN80B-4 ","two SAN24B-4 ","two SAN04B-R"]
You are managing an Oracle Database 11g database with the following backup strategy：1） On Sunday， an incremental level 0 tape backup is performed.2） Monday through Saturday， a cumulative incremental level 1 tape backup is performed. Which twostatements are true regarding the backups performed（） ["The backup performed in step 1 backs up all blocks that have ever been in use in the database.","The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.","The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.","The backup performed in step 2 backs up all blocks that have changed since the most recent incrementalbackup at level 1"]
改变阻抗继电器最大灵敏角应调整什么元件（）。 ["YB抽头匝数","DBK二次绕组中的并联电阻R4","改变DBK一次抽头匝数"]
某工程整体2层地下室、主楼地上12层、裙房地上4层，钢筋混凝土全现浇框架剪力墙结构，填充墙由小型空心砌块砌筑。基础为整体筏板，地下室外墙为整体剪力墙混凝土刚性防水，外加SBS卷材防水层。平整场地结束后.施工单位马上进行了工程定位和测量放线，然后进行土方开挖工作。整个基坑采取大放坡开挖，土方开挖至设计要求时，项目总工程师组织监理进行基坑验槽。经钎探检查，发现基坑内裙房部位存在局部软弱下卧层，项目总工召开现场会议，经协商决定采取灌浆补强，并按要求形成相关验收记录。本工程测量定位及放线应检查哪些内容？
