某浆料代号为“PVA-1799”,其含义是聚合度为1700,醇解度为()。
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浮沉试验报告表中的带泥小计考虑的是浮沉煤泥是所有原生煤泥。
A. 正确
B. 错误
() can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.
A. The medium speed 4-stroke trunk piston engine
B. The low speed 2-stroke crosshead engine
C. The medium speed 2-stroke crosshead engine
D. The low speed 4-stroke trunk piston engine
记忆是人们关于世界一切知识的最初源泉。
A. 正确
B. 错误