某井钻井取心井段为1512.30~1521.40m,实取岩心长度为8.70m,则岩心收获率为()。
A、94.3%
B、95.6%
C、104.6%
D、97.6%
参考答案:B
—I met some problems, could you please give me _______?
—Sure. [ ]
A. some advice
B. some advices
C. an advice
如果EFCS系统所有的计算机失效,是否还能够对飞机进行俯仰控制?
A、能够
B、不能