问题 单项选择题

关于低压交流电动机的保护,下列哪项描述是错误的?()

A.交流电动机应装设短路保护和接地故障保护,并应根据具体情况分别装设过载保护、断相保护和低电压保护。同步电动机还应装设失步保护

B.数台交流电动机总计算电流不超过30A,且允许无选择地切断时,数台交流电动机可供用一套短路保护电器

C.额定功率大于3kW的连续运行的电动机宜装设过载保护

D.需要自起动的重要电动机,不宜装设低电压保护,但按工艺或安全条件在长时间停电后不允许自起动时,应装设长延时的低电压保护

答案

参考答案:B

单项选择题 A1/A2型题
阅读理解

President Bush this week announced his support for a proposal by Israeli Prime Minister Ariel Sharon.Details published Friday said Israel would remove troops and all settlements from the Gaza Strip by the end of next year.About seven-thousand settlers live there.

Israel would also remove four settlements in the West Bank.But six large settlements would remain.The ruling Likud party of Minister Sharon is expected to vote on the proposal on May second.

Minister Sharon visited the White House on Wednesday.President Bush praised what he called “ historic and courageous actions.” Mr.Bush said the plan gives the Palestinians, in his words, “ a chance to create a reformed, just and free government.”

Palestinian leaders have denounced(谴责)the president.Prime Minister Ahmed Qureia said Bush is the first president to accept Jewish settlements in Palestinian territories.

British Prime Minister Tony Blair was at the White House Friday.He said he welcomed the plan.Blair urged other countries to get involved.

At least for now, Israel would continue to control airspace, waters and land passages.Minister Sharon says the plan is necessary because the Palestinian Authority has failed to stop attacks against Israelis.Diplomatic efforts also have not succeeded.

A Bush administration official said the president supports the plan because Israel is taking steps to remove existing settlements.Mr.Bush said removing all Jewish settlements in the West Bank would be unrealistic.

Palestinian officials called for an emergency meeting of the United Nations, the United States, Russia and the European Union.Palestinian President Yasser Arafat says the plan is hurting Palestinians and they will never stop seeking an independent state with Jerusalem as its capital.

Israel captured(夺取)Gaza and the West Bank in the nineteen-sixty-seven Middle East War.It soon began to build settlements.Palestinians want their own state in all of the West Bank and Gaza.They also demand the right of return to lands that are now part of Israel.

On Friday, several thousand Palestinians protested against President Bush and Prime Minister Sharon.

小题1:Which of the following statements is NOT true?

A.Israel removed troops and all settlements from the Gaza Strip

B.Israel had ten settlements in the West Bank

C.President Bush supported the proposal by Israeli Prime Minister Ariel Sharon

D.British Prime Minister Tony Blair was for the plan小题2:From the passage we learn that _____.

A.Palestinians and Israelis are in peace

B.Bush is the first president to accept Jewish settlements in Palestinian territories

C.Other countries also support the proposal

D.Israel would not continue to control airspace, waters and land passages小题3:What is the attitude of Palestinian President Yasser Arafat towards the plan?

A.Agree

B.Happy

C.Disagree

D.Regret小题4:In which part does the passage appear?

A.Sports news

B.Science fiction

C.High technology

D.Home and abroad