当从井底返出的钻井液中的固相较多、含有泥土或流量较大时,可调大向上的倾角。
参考答案:对
—Could you tell me _________?
— You can take No. 16 bus.[ ]
A. how can we get to the Olympic Park
B. how we can get to the Olympic Park
C. how did we get to the Olympic Park
D. how we got to the Olympic Park
人体组织中最硬的组织是()
A.牙釉质
B.牙本质
C.牙骨质
D.颅骨内板
E.颅骨外板