10.A/An______ ______ is any weapon system that requires a crew of two or more individuals performing the same or separate tasks to run at maximum operational efficiency.
crew-served:)weapon
举一反三
- Under the __________ of the university authorities, the teaching staff are performing their teaching tasks with high efficiency.
- Two individuals authorized to serve as a lifeboatman must be assigned to any lifeboat that has a capacity of more than（）.
- In fact, no two individuals are the same in a __________. A: speciation B: species
- For two individuals who engage in the same two productive activities, it is impossible for one of the two individuals to ( ) A: have a comparative advantage in both activities. B: have an absolute advantage in both activities. C: be more productive per unit of time in both activities. D: gain from trade with each other.
- The heating system has recently been repaired to make it more _________ (efficiency).
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—Would you like ___ more cakes ?---Yes, ____ A: some ;no more B: some ;another two cakes C: any ;more two cakes D: any, more than two
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词汇与结构 The main PCU consists of two _________ input rods, two individual control valves, and two separate actuators: one for hydraulic system A and one for hydraulic system B.
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It is very likely that any two people will possess the same sense of the same smell.
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You should separate the body of the essay into two or more body paragraphs.
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There are two shafts in torsion with different materials. Knowing that the two have the same diameter and length and are exerted the same torque.Which one is correct in the following statements about the maximum shearing stress and the angle of twist ___.