【单选题】【消耗次数：1】
机油泵常用的形式有（ ）。
①
齿轮式与膜片式
②
转子式和活塞式
③
转子式与齿轮式
④
柱塞式与膜片式
参考答案：
复制
纠错
相关题目
【单选题】
砼泵有挤压式、气压式及活塞式，其中_____目前被广泛采用。该种常用泵送砼设备按其构造原理的不同又可分为_____式和_____式。
①
挤压式/机械式/液压式
②
气压式/电控式/手动式
③
活塞式/机械式/液压式
④
活塞式/电控式/手动式
随机题目
【单选题】
What（）next will be discussed at the next meeting.
①
to do
②
is doing
③
will do
④
shall we do
【单选题】
_______ his sister, Jack is quiet and does not easily make friends with others.
①
Dislike
②
Liking
③
Alike
④
Unlike
【单选题】
How do you do? Glad to meet you._________
①
Fine. How are you?
②
How do you do? Glad to meet you, too.
③
How are you? Thank you!
④
Nice. How are you?
【单选题】
Don’t take any action until you are fully _____ with the situation there.
①
consented
②
content
③
obvious
④
acquainted
【单选题】
When a fire____ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
①
broke off
②
broke out
③
broke down
④
broke up
【单选题】
What a bad memory I’ve got! I even forgot ______ the book with me.
①
took
②
taking
③
take
④
taken
【单选题】
As the bus came round the comer, it ran _______ a big tree by the roadside.
①
over
②
on
③
into
④
up
【判断题】
判断线上的内容是否正确：If I have any comments to make, I’ll write them in the ___margin___ of the book I’m reading
①
正确
②
错误
【判断题】
判断线上的内容是否正确：Parents should actively urge their children to__keep track of____the opportunity to join sports teams.
①
正确
②
错误