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【简答题】
你能用简便方法计算这道题吗? 28×737+737×73-737
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举一反三
【单选题】When does an American offer a firm handshake to others?
A.
Only upon greeting
B.
Only upon  leaving
C.
upon greeting and leaving
D.
anytime when he wants
【判断题】Getting back on top Michael Dell pioneered a new business model at the firm that bears his name. Now he wants to overhaul it. 1 So why, after three years of relative distance as chairman of the board,...
A.
正确
B.
错误
【单选题】某消防工程施工单位对已安装的消防水泵进行调试,水泵的额定流量为 30L/s,扬程为 100m,系统设计工作压力为 1.0MPa。下列调试结果中,符合现行国家标准《消防给水及消火栓系统技术规范》(GB 50974)的是( )
A.
自动直接启动消防水泵时,消防水泵在 60s 时投入正常运行
B.
消防水泵零流量时,水泵出水口压力表的显示压力为 1.30MPa
C.
以备用电源的切换方式启动消防水泵时,消防水泵在 2min 时投入正常运行
D.
消防水泵出口流量为 45L/s 时,出口处压力表显示未为0.55MP
【单选题】Suppose Mail Boxes Etc. buys a new copier for its store for $1000. A year later, when the firm wants to upgrade to a new copier, it finds that the old copier is only worth $750. Over the year the copi...
A.
replacement investment
B.
gross investment
C.
depreciation
D.
net investment
【单选题】When does an American offer a firm handshake to others ?
A.
Only upon greeting.
B.
Only upon leaving.
C.
Upon greeting and leaving.
D.
Anytime when he wants.
【单选题】防火墙技术主要用来
A.
减少自然灾害对计算机硬件的破坏
B.
监视或拒绝应用层的通信业务
C.
减少自然灾害对计算机资源的破坏
D.
减少外界环境对计算机系统的不良影响
【判断题】( )在国家标准中规定:直流工作接地电阻,交流工作接地电阻以及安全保护接地电阻均不应大于1Ω,防雷保护接地电阻不应大于4Ω。
A.
正确
B.
错误
【判断题】When a firm wants to inventory demand via a reservations system and has insufficient capacity, it should lower prices selectively.
A.
正确
B.
错误
【单选题】Which of the following arrangements are undertaken when a firm wants to keep its seasonal distribution channels functioning throughout the year?
A.
Price skimming.
B.
Using the services of a trading company.
C.
Establishing a retail store.
D.
Using the services of an export management company.
E.
Complementary marketing.
【判断题】DME是一种优良的汽油机替代燃料。
A.
正确
B.
错误
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