【单选题】【消耗次数：1】
（ ）元件向液压系统提供压力油，将电机输出的机械能转换为油液的压力能。
①
动力
②
执行
③
控制
④
辅助
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
The eldest child is thoroughly ____ because they
always give him whatever he wants.
①
wasted
②
spoiled
③
destroyed
④
uneducated
【单选题】
When she saw the clouds, she went back to the house to
____ her umbrella.
①
bring
②
fetch
③
take
④
carry
【单选题】
The new cut in interest rate ____ promote domestic investment.
①
means to
②
directs toward
③
is meant to
④
leads to
【单选题】
—__________fine day it is today!—Yes, the sunshine is__________beautiful that Id like to go swimming in the sea.
①
How, such
②
What a, very
③
How, so
④
What a, so
【单选题】
By cutting down trees we ____ the natural home of birds and animals.
①
harm
②
hurt
③
injure
④
damage
【单选题】
Nowadays, many people suffer from _________ depression under the pressure of working.
①
acute
②
sharp
③
quick
④
cute
【单选题】
Something must have happened on their way. Or they_____
by now.
①
should have arrived
②
should arrive
③
would have arrived
④
would arrive
【单选题】
The treasury issued an order stating that ____ land purchased from the government had to be paid for in gold and silver.
①
henceforth
②
moreover
③
whereby
④
however
【单选题】
If a substance is dissolved in water or heated, it
may ____ a gas.
①
give into
②
give over
③
give off
④
give away
【单选题】
A（n）____ person is one who has much knowledge and
the ability to use it well.
①
smart
②
intelligent
③
clever
④
wise