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【判断题】
在轴两端的支承点,用轴承盖单向固定轴承,可分别限制两个方向的轴向移动。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】A．essential B．elementary C．necessary D．principal
【单选题】How is the principal amount of an interest-only loan repaid?
A.
The principal is forgiven over the loan period so does not have to be repaid.
B.
The principal is repaid in equal increments and included in each loan payment.
C.
The principal is repaid in a lump sum at the end of the loan period.
D.
The principal is repaid in equal annual payments.
【简答题】委托人(principal)
【多选题】A principal vector【图片】and principal moment【图片】can be obtained by reducing an inertial force system to one point (reduction center). Which statements are correct?
A.
The principal vector depends on the position of the reduction center.
B.
The principal moment depends on the position of the reduction center .
C.
The principal vector doesn’t depend on the position of the reduction center .
D.
The principal moment doesn’t depend on the position of the reduction center .
【单选题】The coefficient vector of the principal component expression is the eigenvector of _______________.
A.
the covariance matrix of original variables
B.
the covariance matrix of principal components
【单选题】The principal-Agent problem is mainly because
A.
it is costly and hard for the principal to monitor the agent.
B.
the principal and agent have different incentives
C.
some of the principals have the incentive to take a free-ride of other principals' monitoring
D.
all of the above
【简答题】Distributor Proxy Principal Capacity Exclusive
【简答题】名义本金(notional principal)
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