沉桩施工宜设置()等导向装置,导向装置应具有足够的强度和刚度。
A.帽梁
B.导向梁
C.导桩
D.锚梁
E.导向架
参考答案:B, E
I have no ________ to the plan, so long as it would not cost too much.
A.refusal
B.comment
C.idea
D.objection
胆道疾病首选的检查方法是()
A.口服胆囊造影
B.腹部平片
C.静脉胆道造影
D.B超
E.经皮肝穿刺胆管造影