An anchored vessel on pilotage duty must show which light(s) at night? （）
A sternlight only
B. Anchor lights only
C. A white light over a red light only
D. A white light over a red light and anchor light
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霍奇金病（HD）与非霍奇金淋巴瘤（NHL）的不同。下列哪种说法是错误的（）
A. HD发病年龄较NHL为轻
B. HD淋巴结肿大较NHL常见
C. HD淋巴结外累及较NHL多见
D. HD依次播散，而NHL为跳跃式播散
E. NHL并发淋巴肉瘤细胞性白血病较HD常见
要做好接待工作心理准备，重要的是要学习礼仪常识，塑造自身良好形象。()
A. 正确
B. 错误
The TPC curve，one of the hydrostatic curves in a vessel’s plans，gives the number of tons（）.
A. necessary to change the angle of list 1°at a given draft
B. necessary to change trim 1 cm at a given draft
C. pressure per square cm on the vessel's hull at a given draft
D. necessary to further immerse the vessel 1 cm at a given draft
单相交流电路中，电源电压U乘电路电流I即等于该电路消耗的有功功率。（）
A. 正确
B. 错误
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