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【单选题】
单个渐开线齿轮的基本参数是( )
A.
齿数、模数和压力角
B.
齿数、模数和中心距
C.
压力角、模数和中心距
D.
齿数、压力角和中心距
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...
A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.
【单选题】安全系统整定值是保护系统和安全系统触发自动动作的参数限值，以便保障机组不会达到安全限值。()属于安全系统整定值。
A.
反应堆紧急停堆和相关联锁
B.
专设安全设施驱动和相关联锁
C.
安全阀整定值
D.
以上三者均包含