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【单选题】
Which of the following is true of a voluntary export restraint (VER) ? a. A voluntary export restraint ensures that foreign exporting firms are unable to exercise monopoly power. b. A voluntary export restraint usually requires that the foreign exporting firms act like a cartel, restricting sales and raising prices. c. A voluntary export restraint generates more revenue for the government than a tariff or quota. d. Voluntary export restraints have only been used by the poor and developing nations to protect their domestic industries.A.
B.
C.
D.
D
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【单选题】---Who would you rather ________ the English Speech Contest? ---- Li Ping, I think , is the best choice.
A.
have attend
B.
attend
C.
have attended
D.
attending
【单选题】下列哪个是市场追求经济效率失灵的例子
A.
企业和雇员成功地达成了全面的互惠交易
B.
阿尔法公司愿意付出 $55,000 年薪来雇用一个电脑程序员。李安，一个合格的电脑 程序员愉快地放弃了目前的服务员工作而接受了一份薪酬 $45000 的电脑程序员工 作，而他不知道阿尔法公司的这个空缺
C.
即使马琳给劳拉每小时 $1 让劳拉戒烟，劳拉还是拒绝戒烟
D.
虽然艾斯公司愿意支付黛安每小时 $11 ，但黛安却愿意接收每小时工作 $10 ，因此， 艾斯公司仅以每小时 $10 雇用了她
【单选题】. –Tom, go to the office to fetch the papers. Who would you rather with you, Wang Lin or Li Feng? --- .
A.
have go; Neither
B.
go; Neither
C.
have gone; None
D.
have to go; None
【单选题】There is a leadership opportunity at NC State that really interests you. You would like to apply for the opportunity, but are nervous about the public speaking duties that may be necessary. What shoul...
A.
Avoid all positions and opportunities that involve public speaking.
B.
Do not apply for the position. Public speakers are born, not made.
C.
Apply for the position. Public speakers are made, not born.
D.
Apply for the position but skip any public speaking duties that become necessary.
【单选题】普通圆柱蜗杆传动的正确啮合条件是 ( ) 。
A.
mt1=mx2 ，α t1= α x2 ，γ = β
B.
mx1=mt2 ，α x1= α t2 ，γ =- β
C.
mt1=mx2 ，α t1= α x2 ，γ = - β
D.
mx1=mt2 ，α x1= α t2 ，γ = β
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