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【简答题】
激烈的市场竞争导致销售下降。 A. Our sales declined greatly in spite of the severe market competition. B. Since our sales declined, the market competition would be tougher. C. The severe competition in the market resulted in a decline in sales. D. The reduction in sales led to more severe competition on the market.
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参考答案：
举一反三
【单选题】The BEST information to document when changing the refresh rate on the display is to include:（）
A.
the previous refresh rate and the new refresh rate applied.
B.
the method that was used to access the display properties to change the refresh rate.
C.
all the refresh rates that were tested
D.
the color resolution the user requested as well as the refresh rate.
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【判断题】Document properties include font, font size, bold, italic, underline, and text color.
A.
正确
B.
错误
查看完整题目与答案
【单选题】利用动物细胞生产组织纤溶酶原激活剂t-PA,过程为: 工程细胞构建→细胞培养并收集上清→t-PA抗体的制备→抗t-PA亲和吸附剂的制备→亲和吸附纯化t-PA→t-PA的精制 对于各步骤,以下描述错误的是:
A.
工程细胞的构建是将人t-PA合成基因的DNA采用质粒转化法转入工程细胞，利用脂质体进行表达
B.
t-PA抗体通过免疫法获得，纯化后以共价键连接到亲水不溶性载体上
C.
t-PA是分泌型表达，主要存在与培养液中
D.
亲和纯化利用了抗原抗体特异性反应，结合形式为载体-抗体-t-PA，改变环境可以使t-PA脱落
查看完整题目与答案
【单选题】钢的冷脆性直接受（）的影响。
A.
断面收缩率
B.
冷弯性
C.
冲击韧性
D.
所含化学元素
查看完整题目与答案
【判断题】( )难加工材料主要是指切削加工性能差的材料,不一定简单地从力学上来区分。如在难加工材料中,有硬度高的,也有硬度低的。
A.
正确
B.
错误
查看完整题目与答案
【判断题】Many integrated circuits also incorporate diodes on the connection pins to prevent external voltages from damaging their sensitive transistors. ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】钢的冷脆性直接受( )的影响。
A.
断面收缩率
B.
所含化学元素
C.
冲击韧性
D.
冷弯性
查看完整题目与答案
【单选题】When you add a header or footer to your document, the ___ tab under Header & Footer Tools displays.
A.
Design
B.
Properties
C.
Edit
D.
Layout
查看完整题目与答案
【单选题】Your company has a server named Printer1 that runs Windows Server 2008 R2. Printer1 has the Print and Document Services server role installed.You need to reduce the number of events registered in the ...
A.
Open the Event Viewer console. Create a custom view for the system log. Exclude the events that are notified by Event ID 10 from the filter.
B.
Open the Print Management console. Open the properties of Printer1 and clear the Log spooler information events option.
C.
Open the Print Management console. Open the properties of Printer1 and clear the Show informational notifications for network printers option.
D.
Open the Print Management console. Open the properties of each individual printer on Printer1 and clear the Enable advanced printing features option.
查看完整题目与答案
【单选题】下列哪种不是选用履带式起重机时要考虑的因素(    )。
A.
起重量    
B.
起重动力设备
C.
起重高度    
D.
起重半径
查看完整题目与答案
相关题目：
【单选题】The BEST information to document when changing the refresh rate on the display is to include:（）
A.
the previous refresh rate and the new refresh rate applied.
B.
the method that was used to access the display properties to change the refresh rate.
C.
all the refresh rates that were tested
D.
the color resolution the user requested as well as the refresh rate.
查看完整题目与答案
【判断题】Document properties include font, font size, bold, italic, underline, and text color.
A.
正确
B.
错误
查看完整题目与答案
【单选题】利用动物细胞生产组织纤溶酶原激活剂t-PA,过程为: 工程细胞构建→细胞培养并收集上清→t-PA抗体的制备→抗t-PA亲和吸附剂的制备→亲和吸附纯化t-PA→t-PA的精制 对于各步骤,以下描述错误的是:
A.
工程细胞的构建是将人t-PA合成基因的DNA采用质粒转化法转入工程细胞，利用脂质体进行表达
B.
t-PA抗体通过免疫法获得，纯化后以共价键连接到亲水不溶性载体上
C.
t-PA是分泌型表达，主要存在与培养液中
D.
亲和纯化利用了抗原抗体特异性反应，结合形式为载体-抗体-t-PA，改变环境可以使t-PA脱落
查看完整题目与答案
【单选题】钢的冷脆性直接受（）的影响。
A.
断面收缩率
B.
冷弯性
C.
冲击韧性
D.
所含化学元素
查看完整题目与答案
【判断题】( )难加工材料主要是指切削加工性能差的材料,不一定简单地从力学上来区分。如在难加工材料中,有硬度高的,也有硬度低的。
A.
正确
B.
错误
查看完整题目与答案
【判断题】Many integrated circuits also incorporate diodes on the connection pins to prevent external voltages from damaging their sensitive transistors. ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】钢的冷脆性直接受( )的影响。
A.
断面收缩率
B.
所含化学元素
C.
冲击韧性
D.
冷弯性
查看完整题目与答案
【单选题】When you add a header or footer to your document, the ___ tab under Header & Footer Tools displays.
A.
Design
B.
Properties
C.
Edit
D.
Layout
查看完整题目与答案
【单选题】Your company has a server named Printer1 that runs Windows Server 2008 R2. Printer1 has the Print and Document Services server role installed.You need to reduce the number of events registered in the ...
A.
Open the Event Viewer console. Create a custom view for the system log. Exclude the events that are notified by Event ID 10 from the filter.
B.
Open the Print Management console. Open the properties of Printer1 and clear the Log spooler information events option.
C.
Open the Print Management console. Open the properties of Printer1 and clear the Show informational notifications for network printers option.
D.
Open the Print Management console. Open the properties of each individual printer on Printer1 and clear the Enable advanced printing features option.
查看完整题目与答案
【单选题】下列哪种不是选用履带式起重机时要考虑的因素(    )。
A.
起重量    
B.
起重动力设备
C.
起重高度    
D.
起重半径
查看完整题目与答案
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