一幅完整的地质图包括地质平面图、地质剖面图和()。
A.测点分布图
B.地质柱状图
C.踏勘路线图
D.钻孔分布图
参考答案:B
Tom had made up his mind to give it up, but on ____ second thought he determined to have ____ third try.
A.a ; a
B.不填 ; a
C.不填; 不填
D.the ; a
三通阀的紧急制动位和(),与自动制动阀的作用位置相同。