海船船员考试
单选题Most often （） is attached to the engine-propeller shaft for efficient electric power generation.A a variable-speed AC generatorB a fixed-speed AC generatorC an air blowerD a DC generator
题目
a variable-speed AC generator
a fixed-speed AC generator
an air blower
a DC generator
相似问题和答案
第1题：
A、keyboard
B、Mouse
C、Monitor
D、hard disk
第2题：
Gypsies are often treated with disapproval, lack of trust, and lack of understanding because their way of life is so different from the way most other British people live.
吉普赛人的生活方式和大部分英国人大不相同，所以人们对吉普赛人的态度总是不以为然，很不信任，而且对他们的生活缺乏了解。
第3题：
R & D project managers in high-tech companies most often motivate using _____ power.
A Expert
B Reward
C Referent
D Identification
E None of the above
第4题：
Football games played on Thanksgiving Day often attract large TV audiences because______.
A. football is an old-time tradition
B. the Indians taught the Pilgrims to play football
C. large families often play football
D. most football fans are home from work
55．答案为D 从最后一段可知感恩节是家庭团圆的节日，人们举行家庭聚会，由此可推断足球赛的热播是因为人们休闲在家，比较四个选项，D为最佳答案。
第5题：
A、That
B、It
C、As
D、What
第6题：
A、EDI
B、supply chainBar coding
C、patent
第7题：
We can conclude that accidents involving cars ______.
A. happened most often in New York City
B. do not happen as often as they did in the early days of the auto
C. have killed many more people since Mr Bliss was killed
D. were always the driver's fault
45．选项 A 和 B 文中都未提及。选项 C 是可以推断的。从第一个被车撞死的人到现在，是有很多人死于车祸。根据文章，不清楚是谁的错。选项D 排除。选项 C是正确的。
第8题：
46 R & D project managers in high-tech companies most often motivate using _____ power.
A. Expert
B. Reward
C. Referent
D. Identification
E. None of the above
第9题：
A. Mobility
B. Optical
C. Telepresence
D. Voice
E. Data Center
第10题：
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead ______.
A.penetrations
B.plating
C.framing
D.brackets