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问题 解答题
计算下列各题：
（1）sin230°+cos245°+
2
sin60°•tan45°；
（2）
12
-4sin60°+（tan30°+1）0．
答案

（1）原式=（

1
2
）2+（
2
2
）2+
2
×
3
2
×1

=

1
4
+
1
2
+
6
2

=

3
4
+
1
2
6
；

（2）原式=2

3
-4×
3
2
+1

=2

3
-2
3
+1

=1．

单项选择题

下列各类挡土墙，属于柔性结构物的是()。

A.加筋土挡土墙

B.衡重式挡土墙

C.壁板式锚杆挡土墙

D.重力式挡土墙
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单项选择题

Which of the following statement is wrong ？（）

A．Leading，communicating，negotiating，problem solving and the ability to influence the organization are considered key skill for project managers to possess．

B．Project managers should take into consideration and plan accordingly for influences．

C．Project management skills have no relation to general management skills．

D．Organizations are increasingly accountable for impacts resulting from projects．
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