分光器可以分出的光路有：（）
A.1：2
B.1：4
C.1：16
D.2：32
参考答案：A, B, C, D
— Our holiday cost a lot of money.
— Did it? Well, that doesn't matter _____ you enjoyed yourselves. [ ]
A. as long as
B. unless
C. as soon as
D. though
血站人员任职要求具有国家认定资格的卫生技术人员应占职工总人数的以上。（）
A.70%
B.75%
C.80%
D.85%
