电缆穿过甲板时,必须用金属电缆管、电缆筒或电缆围板加以保护。
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What are two benefits for the Cisco Partner, derived from the Cisco SBR Methodology?()
A. Proactive planning enhances customer satisfaction
B. Solution differentiation from the competition allows for premium margins
C. Thereare faster implementation of new business applications
D. There is less risk through the implementation of proven solutio
我国《中小学校教室换气卫生标准》(GB/T17226-1998)规定教室内空气中CO2最高允许浓度为()
A. 0.05%
B. 0.10%
C. 0.12%
D. 0.15%
E. 0.25%
拉伸试验试样标准中,若试样按截面形状定义的试样号为R,则表示该试样形状为()试样。
A. 矩形
B. 异型
C. 圆形
“五一”中队45名学生去采集树种,每人采集a千克。当a=1.2时,这个中队一共采集()千克。
A. 54
B. 540
C. 52