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【单选题】
齿轮传动时,齿面金属直接接触并相互粘结,较软轮齿的表面金属被撕下而形成沟纹的现象称为( )。A.
齿面胶合
B.
齿面点蚀
C.
齿面磨损
D.
轮齿折断
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举一反三
【简答题】在长方体ABCD-A 1 B 1 C 1 D 1 中，AB= ，AA 1 =1，那么 （ ）。
【单选题】规则第34条5款规定的一长声信号,除其他条文另有规定外:
A.
表示一船发现在航道或水道的弯头另一侧水域的船舶情况
B.
表示在驶近可能被居间障碍物遮蔽他船的水道或航道的弯头或地段的一船所发出的一种警告他船的声号
C.
适用于互见中
D.
适用于任何能见度
【多选题】Why risk assessment is dynamic?
A.
Risk assessment is a dynamic management activity because of changes in the organisational environment and because of changes in the activities and operations of the organisation which interact with that environment.
B.
Some risks reduce over time and others increase, depending upon changes in the business environment that organisations exist in.
C.
It is necessary to always have accurately assessed risks because of the need to adjust risk management strategies accordingly.
D.
Changes in the environment might include changes in any of the PESTEL (political, economic, social, technological, environmental, legal) or any industry level change such as a change in the competitive behaviour of suppliers, buyers or competitors.
【简答题】《谏逐客书》最突出的字眼是 “ ( ) ” 字
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