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参考答案:
举一反三
【单选题】复数的辅角主值取值范围是
A.
(0,π)
B.
(0,π]
C.
(-π,π)
D.
(-π,π]
【多选题】以下药品受震或受热可能发生爆炸的是
A.
二氧化硅
B.
过氧化物
C.
高氯酸盐
D.
乙炔铜
【多选题】以下药品受震或受热可能发生爆炸的是:
A.
过氧化物
B.
高氯酸盐
C.
乙炔铜
D.
乙炔
【单选题】以下药品受震或受热可能发生爆炸的是:
A.
过氧化物
B.
高氯酸盐
C.
乙炔铜
D.
其余三个选项都是
【单选题】侧脑室的描述中,错者是
A.
为大脑半球深面的腔隙
B.
内有脉络丛,产生脑脊液
C.
伸向额叶的部分称前角
D.
左、右侧脑室各借一个室间孔与第四脑室相通
【单选题】If a country has net exports of $8 billion and sold $40 billion of goods and services abroad, then it has
A.
$40 billion of exports and $32 billion of imports.
B.
$48 billion of exports and $40 billion of imports.
C.
$40 billion of imports and $32 billion of exports.
D.
$48 billion of imports and $40 billion of exports.
【单选题】以下药品受震或受热可能发生爆炸的是:
A.
过氧化物
B.
高氯酸盐
C.
乙炔铜
D.
以上都是
【单选题】The ________ is the difference between merchandise imports and exports and a measure of a country's international trade in goods and services.
A.
balance of payments
B.
current account
C.
capital account
D.
balance of trade
【单选题】If the United States exports $100 billion of goods and services and imports $150 billion of goods and services and there is no other factor income or transfers, the balance on the financial account is...
A.
$250 billion.
B.
–$250 billion.
C.
$50 billion.
D.
–$50 billion.
【判断题】services exports and imports refers to international earnimgs other thanthose from goods sent to another county.
A.
正确
B.
错误
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