保证（），是实现能源回归一般商品属性，构建公平开放的的能源市场的重要基础和前提。 A

如图所示电路中，当S₁、S₃断开，S₂闭合时，L₁与L₂______联；当S₂断开，S₁、S₃闭合时，L₁与L₂______联；若同时闭合S₁、S₂、S₃，则会造成电路______．

阅读下面短文，掌握其大意，然后从1-15各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

In a small village, there lived a potter(陶工) who had a donkey. Every day his donkey would carry soil from the ___1___ to his house. Since the field was quite far off, the potter would ___2___ under a tree midway, tying(拴) his donkey nearby.

One day, the potter __3__ to take the rope with which he tied the donkey every day. When he reached the __4__, he became worried and didn’t know what to do. At that time, a saint(圣人) __5__ to be passing by. When the potter told the saint what his __6__ was, he said, “Take the __7__ to the place where you tie him every day. __8__ to tie him using an imaginary rope. He won’t run away.” The potter did what the saint had said.

When he woke up, to his __9__ and relief, he found the donkey standing in the __10__ place. But to his frustration, when he prepared to leave for __11__, the donkey did not move. __12__, the potter saw the wise saint again and told him about the donkey’s __13__ behavior. The saint said, “Go and pretend to untie the rope.” The potter __14__ the saint’s advice.

Now the donkey was ready to leave for home. The potter thanked the wise saint and went home __15__ his donkey.

1. A. factory      B. garden           C. field             D. village

2. A. stand        B. rest             C. sing             D. dance

3. A. forgot       B. decided          C. expected         D. agreed

4. A. stone        B. tree             C. bridge           D. house

5. A. failed        B. attempted        C. happened        D. managed

6. A. animal       B. plant            C. problem         D. result

7. A. bird         B. flower           C. donkey          D. rope

8. A. Believe      B. Learn           C. Wish           D. Pretend

9. A. surprise      B. disappointment    C. anger           D. regret

10. A. similar      B. special           C. same           D. wrong

11. A. field        B. school           C. home           D. hospital

12. A. Quickly     B. Luckily           C. Unfortunately    D. Badly

13. A. funny       B. foolish           C. proper          D. strange

14. A offered       B. followed         C. refused         D. received

15. A. happily      B. sadly            C. seriously       D. casually

下列哪个选项不是Java的保留字

A．Style

B．Caption

C．Enabled

D．Default

在支持装置的检查项目中一般都需要检查哪些内容（）

A.腕臂的变形腐蚀情况

B.腕臂的偏移

C.绝缘子情况

D.支柱情况

某项目合同工期为14个月，项目进度时标网络计划见下图。项目进行到8月底时，F工作的实际进度拖后1.5个月，E工作的实际进度在第8月底时还有2个月完工。项目实际进度应该是（）。

A.拖后2个月

B.没有拖后

C.拖后1.5个月

D.拖后3.5个月