“中国行业标准”中有关“经济、文化”的标准数量（） A.1005个 B.1200个

It was reported that Russuan athlete Olga Pyleva was the first athlete      doping（使用兴奋剂）at the Turin Games.

A．caught for

B．dealt with

C．brought in

D．known of

As you can see, the number of cars on our roads ______ rising these days. [ ]

A. was keeping

B. keep

C. keeps

D. were keeping

针刺仅能达到镇痛，但不能达到（）。

某理想气体经历了一个内能不变的热力过程，则该过程中工质的焓变( )。

A．等于零
B．大于零
C．小于零
D．等于1

螺杆式制冷机的油冷却器传热效果差，将会导致（）。