By the time you arrive at the airport in an hour, the plane________.

Let's go to Paris _____________. A: by plane B: by a plane C: a plane D: by the plane

“Board the plane” means _________. A: go out of the plane B: leave the plane C: enter the plane D: run away

“Board the plane” means _________ A: go out of the plane B: leave the plane C: enter the plane D: run away from the plane. E: C

If you took a plane to a place, you went there ________. A: on plane B: through plane C: by air D: in sky

Which<br/>plane that axial surfaces of folds are parallel to? ____ A: plane<br/>AB B: plane<br/>AC C: plane<br/>BC D: anyone may be possible

For plane bending the characteristics of deformation are ( ). A: The cross section remains plane when bent; B: The axis after deformation is a plane curve; C: All external loads act on the same plane; D: The axis after deformation is in the same plane with the loading plane.

His plane is due at 10 in Paris. Look, ____ plane is now at ______ airport.

By the time you arrive at the airport in an hour, the plane________. A: will be taking off B: will have taken off C: will have been taking off D: will take off

Engagement refers to： A: occipital bone enters pelvic inlet plane B: parietal bone enters pelvic inlet plane C: biparietal diameter enters pelvic inlet plane D: biparietal diameter enters the plane of ischial spine