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【多选题】
What are the main problems in using geared and ungeared betas to calculate a firm's equity beta?A.
(a) It is difficult to identify other firms with identical operating characteristics.
B.
(b) Estimates of beta values from share price information are not wholly accurate.
C.
(c) There may be firm-specific causes of differences in beta values.
D.
(d) The market may recognise opportunities for future growth for some firms but not others.
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【简答题】为保证斜滑块分型面在合模时拼合紧密,注射时不发生溢料,减少飞边,底部与模套间要留有( )mm的间隙。
【单选题】为保证斜滑块分型面在合模时拼合紧密,注射时不发生溢料,减少飞边,底部与模套间要留有( ) mm的间隙。
A.
0.2 ～ 0.5
B.
0.5 ～ 1
C.
1 ～ 1.5
D.
1.5 ～ 2