美国期货和期权的维持保证金是不能用美国长期国债来充当的，所以，投资者还必须在FCM处交纳一定数量的现金作为维持保证金。()
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2006年5月18日，中国期货保证金监控中心成立。该监控中心是经国务院同意、中国证监会决定设立的期货保证金安全存管机构。()
A. 正确
B. 错误
空头套期保值者，如果基差意想不到的扩大，则套期保值者的头寸状况就会得到改善。()
A. 正确
B. 错误
A．Fixing an engine.B．Repairing a car.C．Cashing a check.D．Buying some wheels.
A. Fixing an engine.
B. Repairing a car.
Cashing a check.
D. Buying some wheels.
A．He has a feeling of insecurity.B．He is missing his family.C．He lacks self-confidence
A. He has a feeling of insecurity.
B. He is missing his family.
C. He lacks self-confidence.
D. He feels ill.
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