背书人甲将一张60万元的汇票分别背书转让给乙和丙各20万元、40万元,下列有关该背书效力的表述中,正确的是()。
A. 背书无效
B. 背书有效
C. 背书转让给乙20万元有效,转让给丙40万元无效
D. 背书转让给乙20万元无效,转让给丙40万元有效
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在同次股份发行中,相同种类的股份,每股的发行条件和发行价格应当相同。
A. 正确
B. 错误
Which of the following operations aboard a tanker must be recorded in the Oil Record Book().
Any internal transfer of oil cargo during a voyage
B. The discharge overboard in port or at sea of any bilge water accumulated in machinery spaces
C. The loading or unloading of any or all oil cargo
D. All of the above
()on board ship are used to control and distribute the electrical energy generated by generators.
A. Governors
B. Alternators
C. Blackboards
D. Switchboards
当泵的排量调整到最佳状态时,非固定式叶轮在两层导轮之间应处于()状态下高速旋转。