单项选择题
The ratio of the work done by the machine ________ the work done on it is called the efficiency of the machine.
A．against
B．with
C．to
D．for
点击查看答案
<上一题
目录
下一题>
热门
试题
单项选择题
________ the flood, the ship would have reached its destination on time.
A．In case of
B．In spite of
C．Because of
D．But for
点击查看答案
单项选择题
For years now, the people of that faraway country have been cruelly ______ by a dictator.
A．depressed
B．immersed
C．oppressed
D．cursed
点击查看答案
相关试题
（）
（）
（）
（）
（）