第二章测试1.The relation between
and 
is （ ）.A:The line lies in the plane B:The line is perpendicular to the plane C:The line is parallel to the plane
答案:C
2.Let
, 
. Then 
（ ）.A:
B:
C:
答案:B
3.Suppose that the vectors
and 
are collinear, and 
. Then 
. （ ）A:错 B:对
答案:B
4.Given a point
, the symmetric point of 
about 
-plane is 
. （ ）A:错 B:对
答案:A
5.
is a surface of hyperbolic cylinder parallel to z-axis. （ ）A:对 B:错
答案:A
