in the laboratory和 at the laboratory这两个是不是都对?在一篇文章里既看见了前者又看见了后者,两个什么区别吗?

求英文电子书求At The Bench:A Laboratory Navigator 和At The Helm:A Laboratory Navigator 英文版电子书 in the laboratory和 at the laboratory这两个是不是都对?在一篇文章里既看见了前者又看见了后者,两个什么区别吗? At the inauguration of a new criminal investigation laboratory,supported in part by funds in the laboratory of art,the artistand his mode he()in the laboratory the whole morning.A.has been working ,B.is working,c.has worked 47.This is the biggest laboratory ___ we have every built in our school.A.which B./ Alva found a place in the cellar where he uses as his first laboratory.可以用where吗? Peter found a place in the cellar ____he used as his first laboratory 填where which it 能否为我清晰地解释解题过程Is this laboratory ______ the students visited yesterday. Is this the laboratory ______ the students visited yesterday. A. that B. the one C. where D. in which They work in a laboratory every day.(in a laboratory划线,就划线部分提问,提问词：Where) 英语翻译He began his academic career with a dual appointment in aerospace engineering and the Applied Research Laboratory after working in industry. Is this the room _____ he used as his first laboratory.A.who B.that C.the one D.in which 这句英语中的presence怎么理解a private laboratory confirmed the presence of increased levels of radioactive cesium in some dirt at Tokyo's Edogawa ballpark. laboratory laboratory The biology laboratory is___the southeast of our school 这横线要填at还是in .为什么 The instrument ____ was not in the laboratory.A.which the professor referred usB.to which the professor referred usC.to which the professor referred to usD.which the professor referred to us 英语翻译This study was conducted in a facility that operates in accordance with the principles of Good Laboratory Practice and where the facility is the subject of routine independent quality assurance process and facility audits.This study was n