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【多选题】
设在疏散走道上的防火卷帘应在卷帘的两侧设置启闭装置，并具有______的功能。A.
手动
B.
自动
C.
机械控制
D.
重量控制
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举一反三
【单选题】Oil prices cannot drop unless Venezuela increases its production.
A.
It's not the case that oil prices will drop, and it's not the case that
B.
Venezuela will increase its production.
C.
If Venezuela increases its production, then oil prices will drop.
D.
Only if Venezuela increases its production will oil prices drop.
E.
Either Venezuela will not increase its production, or oil prices will not drop.
F.
If Venezuela does not increase production, then oil prices will drop.
【单选题】商业信用是企业之间进行商品交易时，以延期支付或预付形式提供的信用。归纳起来商业信用主要分为( )两大类。
A.
赊销和委托代销
B.
预付货款和补偿贸易
C.
赊销和预付
D.
分期付款和预付
【多选题】根据国务院的有关规定，缩短工时制在现阶段的主要适用范围包括以下哪些？（）
A.
从事矿山井下、高山、有毒、有害、特别繁重和过度紧张的体力劳动职工
B.
从事夜班工作的职工
C.
哺乳期12个月婴儿的女职工
D.
16岁至18岁的未成年劳动者
【单选题】The rise of oil prices made scientists search for new energy resources ______ oil．
A.
replace
B.
replacing
C.
to replace
D.
replaced
【单选题】Up ______ when the country declared war on its neighboring country.
A.
the oil prices went
B.
went the oil prices
C.
did the oil prices go
D.
would the oil prices go
【单选题】What happens in many oil-exporting countries when oil prices go down?
A.
They suspend import of necessities from overseas.
B.
They reduce production drastically to boost oil prices.
C.
They use their money reserves to back up consumption.
D.
They try to stop their economy from going into free-fall.
【单选题】According to the text, oil prices are kept high because______.
A.
only a little oil is being refined
B.
refineries take a long time to build
C.
people are driving too much
D.
supplies of refined oil are limited
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