鼻窦恶性肿瘤中最多见的是()。
A.颌窦
B.筛窦
C.上颌窦
D.蝶窦
E.鼻腔较鼻窦更多见
参考答案:C
In case of emergency, whether knowing how to apply first aid or not really ________ in matters concerning wounds like swollen wrists, broken arms, burns, cuts, and so on.
A.makes difference
B.makes a difference
C.makes differences
D.makes different
封闭型完井方式的井底结构是()。
A、裸眼
B、固井套管
C、产层上部固井下部裸眼
D、裸眼十砾石充填