下列哪一种情况不会导致压气机喘振?()
A.在燃烧室聚积了大量的积碳
B.涡轮失效
C.压气机失效
D.燃油电磁阀失效
参考答案:D
— Jimmy is still unhappy today.
— It's all your fault. You ______ to her yesterday for your mindless mistake. [ ]
A. should apologize
B. should have apologized
C. shouldn't have apologized
D. must apologize
标注管螺纹的代号时,不能将管螺纹的代号标注在螺纹大径的尺寸线上,而是()用引出线标注。
A、以说明的方式
B、以绘图的方式
C、以旁注的方式
D、以明细的方式