曲轴左右主轴径同轴度一般为（）mm。
A.0.1-0.5
B.0.02-0.05
C.0.01-0.05
D.0.2-0.5
参考答案：B
Whitney Houston’s sudden death suggests that drug abuse is such a serious problem ______ we should
deal with properly. [ ]
A. as
B. that
C. which
D. where
电子图书具有以下优点（）
A、价格低廉
B、更新及时
C、存储密度高
D、检索方便
