慢性期出血
参考答案：
病灶呈圆形、类圆形或裂隙状低密度。
Living in the central Australian desert has its problems,______ obtaining water is not the least.
A．for which
B．to which
C．of which
D．in which
某公路桥梁为一座单跨简支梁桥，跨径40m，桥面净宽24m，双向6车道。试问，该桥每个桥台承受的制动力标准值（kN），与下列何项数值最为接近？（）
A.37
B.74
C.87
D.193
