显微镜的使用分哪几步？
参考答案：
（1）取镜；（2）对光；（3）放片；（4）使用低倍接物镜；（5）使用高倍镜；（6）还镜。
依据监督检查的需要，药监部门对药品抽查检验时
A．不得乱收费
B．不得免费检验
C．不得收取任何费用
D．可以适当收取一定费用
E．必须向检验机构预先支付化验费用
What will happen to the jet sales in 2008().
A. The sales are expected to slow for Airbus and Boeing.
B. The sales are expected to increase only for Boeing.
C. The sales are expected to slow only for Airbus.
D. The sales are expected to slow for neither Airbus nor Boeing.
