题目内容

声带麻痹患者呈金属音调咳嗽

A. 对
B. 错

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肺炎球菌肺炎患者咳大量粉红色泡沫痰

A. 对
B. 错

发动机电控系统按照喷射位置分为 [ ] 和 [ ] 类型。其中的 [ ] 可以进一步分为 [ ] 和 [ ]。

It takes at least four years to get a bachelor's degree from an institution of higher learning in the US.

A. 对
B. 错

In the United States school systems, which of the following divisions is true?

A. Elementary school, grammar school.
B. Elementary school, junior high school.
C. Elementary school, secondary school.
D. junior high school,senior high school.

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