【判断题】主轴回转轴心线对工作台面的垂直度属于数控机床的定位精度。
【单选题】主轴回转轴心线对工作台面的垂直度属于数控机床的( )精度检验
【单选题】What does the last sentence in the third paragraph imply?
A.
The teaching of poetry should have been much more stressed
B.
The teaching of poetry is more important than the teaching of any other subject.
C.
One cannot enjoy life fully without an understanding of poetry.
D.
Poetry is the foundation of all language and literature course.
【单选题】What does the last sentence in the third paragraph imply?
A.
The teaching of poetry should have been much more stressed.
B.
The teaching of poetry is more important than the teaching of any other subject.
C.
One cannot enjoy life fully without an understanding of poetry.
D.
Poetry is the foundation of all languages and literature courses.
【判断题】机动车驾驶人将机动车交由未取得机动车驾驶证的人驾驶的,公安机关交通管理部门可以吊销或扣留驾驶人驾驶证。
【单选题】下列说法错误的是( ).
B.
光从光疏介质进入光密介质时,无论入射角多大,都不可能发生全反射。
C.
光从光密介质入射到两种介质的分界面上,当入射角大于临界角时,将发生全反射.