汽车通过空调系统检视窗查看时，检视窗清晰现象说明（）
A. 制冷剂不足
B. 制冷剂全满
C. 无制冷剂
D. 干燥剂正在系统中流通
查看答案
钢塔构件连接法兰盘的接触面不得涂漆，如有污染应清除干净，以确保良好的接地。
A. 正确
B. 错误
You work as a database administrator for Certkiller .com. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database？（）
A. Start the instance and open the database, instance recovery automatically recovers control files
B. Create a file based on the contents of the trace file and save it to the control file locations and start the database
C. Re-create the database (The recovery of the control file is not possible because you have lost all the control files.)
D. Start the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file.
E. Start the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.
幼儿园教育的基本原则是（）
A. 儿童利益优先的原则
B. 尊重儿童的原则
C. 游戏为基本活动的原则
D. 保障幼儿基本权利的原则
如果实测冲程与实际不符，可以通过调整角位移传感器游梁臂长修正。（）
A. 正确
B. 错误
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