Excessive lube oil consumption by a reciprocating air compressor can be caused by （）.
The amount of fuel delivered by a unit injector is controlled by the （）
The amount of fluid delivered by a screw pump can be regulated by （）.
The primary method by which water spray puts out fires is by（）.
The amount of fluid delivered by a gear pump can be regulated by （）.
The amount of fluid delivered by a helical pump can be regulated by （）.
Messages concerning weather conditions transmitted by radiotelephone are preceded by（）.
In Ireland a prime minister is appointed by after nomination by（）.
UPSR protection switching is initiated by （）, while BLSR is initiated by （）.
The voltage developed by an AC generator is controlled by varying the （）
The amount of fluid delivered by a reciprocating pump can be regulated by （）.
The amount of fluid delivered by a centrifugal pump can be regulated by （）.
线性消费函数C=a+by中by在宏观经济学中称为什么？（）
A moment is obtained by multiplying a force by its（）.
2. How does Bill’s company ensure product safety?☐ A. By testing products on animals.☐ B. By developing safety technologies.☐ C. By conducting human experiments.
Benjamin Franklin was born in a rich family and well educated.（ ）
线性消费函数C＝a+by中by在宏观经济学中称为什么？
在SELECT语句中，当使用OBDER BY子句时，一定要使用GROUP BY子句。（ ）
Major types of media bias include: bias by omission, bias by placement, bias by headline, bias by photos and captions, and bias by ______.
GROUP BY 子句总是跟在WHERE 子句后面,当WHERE子句缺省时,不能出现GROUP BY子句。（ ）
by and by 这个词组中，第一个单词by 与接后一个单词 and 之间有元音连读。
Traveling by air is _____ more comfortable than traveling by train.
I like by bus rather than by tube as you can see more. 、
Benjamin Franklin was remembered for his good judgment.
