()用于有垂直位移或振动较大的管道上,由卡箍、吊杆、弹簧、支承结构组成。
A.普通扁钢吊卡
B.普通双合吊卡
C.弹簧吊架
参考答案:C
患者,男,56岁。头晕、头痛4个月,查体:血压增高。舒张压>120mmHg,腹部可闻及血管杂音。眼底视网膜水肿伴出血。
患者有可能患的疾病是
A.腹主动脉瘤
B.肾动脉狭窄
C.嗜铬细胞瘤
D.原发性高血压
E.门静脉高压
Hague was elected as the Conservative Party leader partly because of his ambiguous views on Britain's position in relation to its partners in the European Union.
A.ambitious
B.obscure
C.appalling
D.indifferent