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【单选题】
下列关于离心泵说法错误的是 。A.
离心泵产生的最大排压有限,故不必设安全阀
B.
泵的轴功率随流量增大而增加
C.
泵在额定工况附近工作较高的效率
D.
离心泵不宜用做船用水泵和较大油轮的货油泵
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举一反三
【单选题】Now that she is out of a job, Lucy _____ going back to school, but she hasn’t decided yet.
A.
had considered
B.
has been considering
C.
has been completed
D.
is going to consider
【单选题】Now that she is out of job, Lucy ___ going back to school, but she hasn’t decided yet.
A.
had considered
B.
has been considering
C.
considered
D.
is going to consider
【判断题】十六字诀的基本精神是,从敌大我小、敌强我弱的基本特点出发,利用农村的政治、经济和地理等有利条件,扬长避短,灵活机动,以求保存和发展自己,消灭敌人,逐步改变敌我力量对比,夺取游击战争的胜利。
A.
正确
B.
错误
【简答题】Now that she is out of a job, Lucy ______ going back to school, but she hasn't decided. A) had considered B) has been considering C) considered D) is goin...
【单选题】Now that she is out of a job, Lucy ______ going back to school, but she hasn’t decided yet.
A.
had considered
B.
is going to consider
C.
has been considering
D.
considered
【简答题】某企业本月支付厂部管理人员工资30000元，预支厂部半年(含本月)报刊杂志费2400元，生产车间财产保险费6000元，该企业本月管理费用发生额为（ ）元。
【单选题】患儿男4岁,自幼青紫,2岁会走路。但不肯自己走,走几步即下蹲,初步诊断为法洛四联症。近来家长带小儿就诊。准备手术,护士对家长的健康教育是( )
A.
增加营养,增强体质
B.
预防上呼吸道感染
C.
避免情绪激动和剧烈哭闹
D.
掌握合理的生活制度和活动量
E.
按时进行预防接种
【单选题】Now that she is out of a job, Lucy ______going back to school, but she hasn’t decided yet.
A.
had considered
B.
has been considering
C.
considered
D.
is going to consider
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