【单选题】When the is operated, a supply of pilot air enables the remote valve to open.
【单选题】When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the _____.
【单选题】How many functional words in the sentence “When the recorder is operated in the record mode,previous recordings are automatically erased” ?
【单选题】When the inductive motor is operated in motoring region, the rotation direction of the rotor ( ) that of the rotating magnetic field .
C.
can be the same or opposite
【单选题】在酱腌菜、存贮饲料和酸乳的制作中起主要作用,是益于宿主健康的微生物。
【单选题】When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the ____.
【单选题】在酱腌菜、存贮饲料和酸乳的制作中起主要作用,是益于宿主健康的微生物。
【单选题】In the sentence “Speed is a property not of any single component of a car, but of the whole system when the car is operated properly”, the word “property” means which of the following?
A.
a building or buildings and the land belonging to it or them
B.
a thing or things belonging to someone
C.
a piece broken off or cut off from sth.
D.
an attribute, quality, or characteristic of something
【单选题】2015 年 9 月 22 日,习近平抵达访美首站西雅图,开启为期 7 天的访美之旅。中美两国在多方面达成共识,实现了经济、科技、人文交流等多方面的合作。这主要强调 ( )