高层建筑的轴线向上层或下层引测(垂直投影)的专用仪器为()
A.垂直引测仪
B.垂准仪
C.经纬仪
D.吊线
参考答案:B
We are so poor that we can't afford a new car. [ ]
A. buying
B. buys
C. buy
D. to buy
应激状态下,葡萄糖直接氧化的最大速率由()
A.2~3mg/(kg.min)下降至1~2mg/(kg.min)
B.3~4mg/(kg.min)下降至2~3mg/(kg.min)
C.4~5mg/(kg.min)下降至3~4mg/(kg.min)
D.5~6mg/(kg.min)下降至4~5mg/(kg.min)
E.6~7mg/(kg.min)下降至5~6mg/(kg.min)