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【多选题】
收集资料的( )对调研分析的科学性产生着直接的影响A.
真实性
B.
有效性
C.
科学性
D.
前瞻性
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【单选题】A fishing vessel is approaching a vessel not under command. Which statement is true? ______
A.
The fishing vessel must keep clear of the vessel not under command
B.
If the vessel not under command is a power-driven vessel， she must keep clear of the fishing vessel
C.
They must exchange whistle signals
D.
Both vessels are required to take action to stay clear of each other
【简答题】读甲、乙两工厂万元产值主要成本百分比比较表，回答： 原料成本 劳动力成本 技术成本 运输成本 其他成本 甲工厂 41 22 6 10 21 乙工厂 3 23 43 6 25 小题1:下列关于甲、乙两工厂劳动力成本的叙述，正确的是 A．甲、乙两工厂所属工业类型对劳动力数量的要求相当 B．经济发展水平的提高使甲、乙两工厂劳动力成本比例上升 C．甲工厂属于廉价劳动力指向型工业，工人的工资水平低 D．乙工...
【判断题】Under CFR，when the goods have been delivered on board the vessel，the seller is considered to have fulfilled his duties．He has no obligation to procure insurance or to inform. the buyer of taking measu...
A.
正确
B.
错误
【简答题】在机械制图中选用规定的线型,可见轮廓线用____"线表示。
【单选题】A fishing vessel is approaching a vessel not under command. Which statement is TRUE? （）
A.
The fishing vessel must keep clear of the vessel not under command
B.
If the vessel not under command is a power-driven vessel，she must keep clear of the fishing vessel
C.
They must exchange whistle signals
D.
Both vessels are required to take action to stay clear of each other
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