糖酵解中催化不可逆反应的酶有（） A．葡萄糖-6-磷酸酶  B．磷酸烯醇式丙酮酸羧激

Multipurpose Internet Mail Extension (MIME) is a (2) document messaging standard in the Internet enviroment, with MIME, users can send (3) Email messages that include audio, video, graph-ices, and text to any other user of a TCP/IP network. Richtext information can also be (4) into messages. It defines the fonts, formats, and (5) features of a document so the document can be easily (6) on many different types of systems.

A) completeB) compoundC) simple D) efficient

白癜风的皮损不累及全身。

什么是韧脆转变温度和无塑性温度？无塑性温度如何测定？

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（）呈半液太状油脂含量少。

A.粉条

B.粉霜

C.粉底霜

D.蜜粉