在贝卡谷地作战中，以色列使用的预警机是（）A、E－6 B、E－3 C、E－8 D、E－2

下面不是上网方式的是（）。

A.ADSL拨号上网

B.光纤上网

C.无线上网

D.传真

利率对汇率变动的影响是( )。

A．国内利率上升，则本国汇率上升

B．国内利率下降，则本国汇率下降

C．须比较国内外的利率和通货膨胀率后确定

D．没有什么影响

引起红细胞沉降率加快最常见的原因为

A．各种炎症

B．组织坏死

C．恶性肿瘤

D．红细胞增多症

E．肝病

I am honored to be here today, (1) Harvard at this celebration of the College Board’s half century of working to promote (2) and equal opportunity in higher education.
Before I say anything else, I want to thank everyone in the room for the work you do every day to make college (3) , available, and (4) for millions of young people across the country.
I want to focus my remarks on a matter of (5) to American familiesand to the future of the nation -- restoring education to its proper role as a (6) to equal opportunity and (7) in our society.
This has been an (8) in higher education, with great and creative efforts made by many institutions. Earlier this year, we announced a new (9) at Harvard aimed at the students from families of low and (10) income. Under our new program, families with incomes of (11) will no longer be expected to contribute to the cost of attending Harvard for their children. Families with incomes of less than $ 60,000 will also see their (12) reduced.
We are proud of this effort at Harvard, but we are aware that the programs of individual institutions with means can never be a substitute for our shared (13) to provide adequate funding for Pell grants and other financial aid, and for the state and community college systems that make higher education (14) and affordable for the (15) .
There is something empty about (16) initiatives that may be right for one institution without attention to their broader impact. (17) , we (18) if we urge changes in national policy without doing what we can on our own campuses.
In this spirit, I want to (19) today a problem that is emerging with (20) in this nation.

不得直接进行遥控复归信号的项目有（）。

A.开关或保护动作行为不正确时

B.误发信号

C.过流保护动作跳闸，核实正确

D.在未核实具体保护动作情况前