原油,C5及C5以上成品油管道与高速公路、一级公路、二级公路平行铺设时,其管道中心距公路用的范围边界,不宜小于()m。
A.5
B.10
C.15
D.20
参考答案:D
The teacher would rather the boy ________ what she demands ________ him to set the bird ________ free .
A.to do ; of ; caught alive
B.did ; from ; being caught living
C.had done ; for ; caught lovely
D.did ; of ; caught alive
口外支抗类矫治器支抗部件不包括下列哪项()。
A.颈带
B.头帽
C.颏兜
D.面具和面架
E.橡皮圈