问题
多项选择题
雨期开挖路堑时要注意的事项有( )。
A．在土质路堑开挖前，在路堑边坡坡顶2m以外开挖截水沟并接通出水口
B．开挖土质路堑宜分层开挖，每挖两层均应设置排水横坡
C．开挖土质路堑宜分层开挖，每挖两层均应设置排水纵坡
D．雨期开挖岩石路堑，炮眼应尽量水平设置
E．开挖土质路堑宜分层开挖，每挖一层均应设置排水纵横坡
答案
参考答案：A,D,E
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雨期开挖路堑时要注意的事项有( )。
A．在土质路堑开挖前，在路堑边坡坡顶2m以外开挖截水沟并接通出水口
B．开挖土质路堑宜分层开挖，每挖两层均应设置排水横坡
C．开挖土质路堑宜分层开挖，每挖两层均应设置排水纵坡
D．雨期开挖岩石路堑，炮眼应尽量水平设置
E．开挖土质路堑宜分层开挖，每挖一层均应设置排水纵横坡
参考答案：A,D,E
An analyst does research about security market indices and gathers the following information about market-capitalization-weighted index consisting of the shares of three companies:
| Company | Beginning Share Prices | Ending Share Prices | Dividends Per Share | Shares Outstanding |
| A | $26 | $21 | $1.60 | 300 |
| B | $51 | $46 | $2.10 | 300 |
| C | $11 | $13 | $3.10 | 400 |
A. -16.55%
B. -8.00%
C. 0.55%