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如果让你主持一场主题为“知识改变命运”的演讲会，你会怎样主持？

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测定水中总磷时，采500mL水样后，加入1mL的浓（）调节pH值使之低于或等于1。

A. 盐酸
B. 硫酸
C. 硝酸
D. 高氯酸

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发动机大修竣工后，在发动机转速为100～150r/min时各缸压力差应该不吵其平均值的（）

A. 8%
B. 10%
C. 4%
D. 5%

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A Dell customer decided to use IBM Director and xSeries to manage their servers. They purchased 10 IBM x336 servers and they already have 75 various Dell servers. Which TWO steps need to be verified to be able to manage the mixed environment with IBM Director？（）

A. Verify that the Dell systems have TCP/IP enabled
B. Verify that the systems are running the IBM Director Agent
C. Verify that the managed systems are SMBIOS 2.1 and WfM 2.0 compliant
D. Verify that the Dell systems have at least a 1GB of memory installed
E. Install an SNMP agent on the Dell systems as IBM Director cannot manage Industry Standard non-IBM server

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小、微型出租营转非载客汽车（排气量小于1升）使用年限（）年，每（）年检验1次。

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