【单选题】【消耗次数：1】
在四杆机构中，取（）杆作为机架，则可得到双摇杆。
①
靠近齿顶处
②
靠近齿根处
③
节线附近的齿顶一侧
④
节线附近的齿根一侧
参考答案：
复制
纠错
相关题目
【单选题】
一渐开线直齿圆柱标准齿轮，已知齿数z=25，齿距p=12.566mm，压力角a=20。，齿顶高系数ha*=1，顶隙系数c*=0.25。齿根圆直径（ ）。
①
90mm
②
92mm
③
96mm
④
108mm
【单选题】
单跨超静定梁一侧温度升高一侧温度减低，这将（）。
①
不引起的的弯矩
②
引起降温面授拉的弯矩
③
引起升温面授拉的弯矩
④
有可能引起降温面授拉的弯矩也有可能引起升温面授拉的弯矩
随机题目
【单选题】
Yourroomis______mine.
①
twice as large than
②
twicethesizeof
③
biggertwicethan
④
astwicelargeas
【单选题】
The old farmer,________the badly injured and burnt soldier,came out of the burning farmhouse,calling continuously for help.
①
supporting
②
having supported
③
being supported by
④
being supported
【单选题】
They can’t leave until they _______ their work .
①
did
②
are doing
③
have done
④
his done
【单选题】
As I will be away for at least a year,Id appreciate________from you now and then so that I can know how everyone is getting along.
①
having heard
②
to hear
③
hearing
④
being heard
【单选题】
The dog,________,will be made a good watchdog.
①
to train properly
②
being trained properly
③
properly to train
④
trained properly
【单选题】
—Have you searched the sitting room for your key?
—No. It was in the study________ I remember I left it.
①
which
②
where
③
that
④
as
【单选题】
The monument(里程碑) was built in honor of the explorer who was believed________the river.
①
to have discovered
②
to have been discovered
③
to discover
④
having been discovered
【单选题】
Theearthisabout_______asthemoon.
①
as fiftytimebig
②
fiftytimesasbig
③
asbigfiftytimes
④
fiftyastimesbig
【单选题】
The English is GREAT campaign is intended to recognize outstanding individuals ______,every day and in many different ways,share their passion for the English language.
①
when
②
which
③
who
④
where