白粉笔的盒数等于红粉笔的盒数，要把红粉笔的盒数看作单位“1”．______．

溢额再保险分出公司的自留保费计算公式是（）。

A.自留额／保险金额×保险费

B.自留额／保险金额×保险赔款

C.分保额／保险金额×保险费

D.分保额／保险金额×保险赔款

—I can't find my seat. Could you show me, sir?

—________. May I see your ticket, please?[ ]

A. Sure

B. I agree

C. Good idea

D. It doesn't matter

In today’s competitive economy, ________ everyone is trying to do more with less, you’ve got to figure out a way to profit from the very beginning.

A．which

B．that

C．how

D．where

加氢汽油产品有机硫超标时，主要应考虑硫化氢汽提塔系统的操作。

以下关于显影剂性质的叙述，哪一条是正确的（）

A、对苯二酚显影反差小

B、菲尼酮可取代对苯二酚与米吐尔组成显影剂

C、当温度降低时，米吐尔显影能力显着降低，对苯二酚则不明显

D、当硷度增大时，对苯二酚显影能力显着提高，米吐尔则不明显