题目内容

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%

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

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。

根据皮亚杰的观点,儿童能发现物体在水中受到的浮力与物体排开的水量有关,而与物体的质地无关,说明儿童的认知发展水平已处在()。

A. 感知运动阶段
B. 前运算阶段
C. 具体运算阶段
D. 形式运算阶段

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