施工成本分析的方法包括比较法、因素分析法、差额计算法、比率法等基本方法。
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关于卷绕机传感器下列描述正确的是（）。
A. 断丝传感器输出的是24VDC信号
B. EPR内压力变送器输出信号为0-10V
C. B1速度传感器输出信号为1-10V
D. B50是保护板位置信号
A Master would be well advised to file a note of protest if（）.
A. Portions of his vessel's cargo were illegally impounded
B. Longshore labor went on strike in a port causing undue vessel delay
Cargo was received at ship side which was damaged in land transit
D. The vessel encountered heavy weather which might have caused bottom damage
防止虫害的方法主要有化学杀虫法、（）杀虫法和（）杀虫法。
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