更多"[单选题] The energy of an animal is pr"的相关试题:
[单选题] Every part of the animal body_
A. works independently
B. works dependently on each other
C. looks like the same as that of a machine
D. has the same structure as that of a machine
[单选题] The body of an animal is like a locomotive in that __
A.it is composed of many parts that work just like different parts of a locomotive
B.it can do some particular kind of work
C.it works like all the machines in the world
D. both the animal and the locomotive need coal or wood as their fuel
[简答题]Riding bicycles can save energy.
[单选题] The function of animal s legs is like_ _of a machine.
A. the wheels
B. chimney
C. steam pipes
D. the firebox
[单选题]Means shall be provided for automatically giving audible warning of the release of fire-extinguishing medium into any ro-ro spaces and other spaces in which personnel normally work or to which they have access. The pre-discharge alarm shall be automatically activated. The alarm shall operate for the length of time needed to evacuate the space, but in no case less than seconds before the medium is released.
A.5
B.10
C.15
D.20
[简答题]There is a large amount of energy wasted due to friction(摩擦).
[判断题]节能措施（ECM：energy conservation measures）是指为提高能源利用效率或降低能源消耗所采用的方法。
A.正确
B.错误
