[判断题]机车上应备有复轨器和铁鞋（止轮器）。
A.正确
B.错误

[判断题]重大危险源是指长期地或临时的生产、加工、搬运、使用或贮存危险物质，且危险物质的数量等于或超过临界量的单元

[单项选择]目前解决长途与本地共用资源的主要办法是在长途与本地资源管理系统中（）存储对方资源。
A. 分别
B. 多次
C. 独立
D. 重复

[单选题]肺气肿的发生与遗传因素有关是指人体血清中缺乏
A. 葡萄糖醛酸酶
B. 白细胞碱性磷酸酶
C.肌酸磷酸激酶
D.γ-谷氨酸转肽酶
E. α

[判断题]对不合格或应报废的机具应及时清理，不准与合格的混放。
A.正确
B.错误

[单项选择]( )组织结构中，项目的每一名成员都接受项目经理和职能部门经理的双重领导。
A. 直线制
B. 职能制
C. 矩阵制
D. 直线职能制

[单项选择]列入国家二级保护野生药材物种的是
A. 川贝母
B. 虎骨
C. 甘草
D. 连翘
E. 刺五加

[单选题]40mm±0.008mm的最小极限尺寸是(　　)。
A.0
B.40mm
C.40.008mm
D.39.992mm

[单项选择]
At first everything seemed fine and dandy. America was enjoying one of the biggest economic surges in the nation’s history. However, even though America benefited from the economic boom of the so called "Roaring Twenties", the imbalance between the rich and the poor combined with the production of more and more goods and rising personal debt caused one of the biggest recessions in history. On Black Tuesday, October 29,1929, the stock market crashed, triggering the Great Depression, which was the worst economic collapse in the history of the modern, industrial world. It spread from the United States and rippled out to the rest of the world, with banks failing and businesses going bust for over a span of a decade, leaving more than a quarter of the working force in America without jobs.
President Herbert Hoover, underestimating the seriousness of the crisis, called it "a p
A. Square Ａ.
B. Square Ｂ.
C. Square Ｃ.
D. Square Ｄ.