现行空气质量日报中，计入空气污染指数的项目中，不包括的项目是（ ） A．SO2

A police officer in a small town stopped a motorist who was speeding down Main Street. "But officer," the man said, "I can explain." "Just be quiet!" snapped the officer. "Or I’m going to let you cool off in jail until the chief gets back." "But officer, I just wanted to say... " "And I said KEEP QUIET! Now you’re going to jail!" A few hours later, the officer checked up on his prisoner and said," Lucky for you the chief is at his daughter’s wedding. He’ll be in a great mood when he gets here. " "Don’t count on it," said the prisoner. "I’m the groom; he is my father-in-law. \

下列字符中,其ASCII码值最大的是______。

A．a

B．y

C．9

D．D

输出控制方式的空间接线器，每个控制存储器对应一条（）.

A.输入线

B.输出线

C.输入线和输出线

D.都可以

G54是在加工前设定好的坐标系，而G92是在程序中设定坐标系。

经皮给药系统由于能够减轻患者痛苦，提高其依从性等优势，已成为近年来新型给药系统的研究热点。盐酸苯海拉明能消除各种过敏症状，但其中枢抑制作用显著，通过透皮给药系统，能够减少其不良反应，发挥其局部作用。以胆固醇为油相，聚山梨酯-80和司盘-20为表面活性剂制备盐酸苯海拉明微乳，药物透入皮肤总量为32%。推测水溶性的盐酸苯海拉明微乳有可能通过渗透等途径到达真皮层。胆固醇进入皮肤后，通过水化效应，增加皮肤水化体积，使水化区域中盐酸苯海拉明透过量增加。

不作为透皮吸收促进剂使用的是（）

A.氮酮类化合物

B.表面活性剂

C.尿素

D.三氯叔丁醇

E.二甲基亚砜

F.乙胺丁醇