对外贸易量是指( )A．以公吨计量的对外贸易数量 B．以美吨计量的对外贸易数量 C

结合语境，填入横线处最恰当的一项是[ ]

　　听话，看文章，碰到错误的说法，总是先直观地感到它不对，至于为什么不对，那要后一步，思索一下，才能说出这不合什么法，而更多的是觉得平时不这样说。这可以说明，在判定对错上，____________________________________。

A．占上风的仍旧是知识，不是习惯  

B．占上风的仍旧是习惯，不是知识

C．占上风的仍旧是规律，不是认识  

D．占上风的仍旧是认识，不是规律

成品瓷牙的不足之处是

A．硬度大
B．不易磨损
C．光泽好
D．不易污染
E．与基托树脂结合差

芽子碱及其盐

燃烧的三要素是什么？

WebSQL is a SQL-like (76) language for extracting information from the web. Its capabilities for performing navigation of web (77) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the finks in a (78) , all the pages that can be reached from a given URL through (79) that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (80) Interface.

A．Router

B．Device

C．Computer

D．Gateway