题目内容

Jerry _______the tour after suffering a bad disease.

A. canceled
B. set
C. agreed

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Part IIVocabulary and StructureSection AFill in the blanks with words from the boxes.mindusualcancelstormwaterproofrainingofficialFunnyterribleagree1. Crops were damaged by the__________.2. It is_________ for him to go to the office on foot.3. You'll like Tom-he's really__________.4. I don't___________ washing the dishes.5.I_________with my father about most things.6.It is__________ heavily all day.7. Spanish is the country's__________ language.8. I think I will have to_________ the dinner. I am not feeling well.9.A(n)__________ storm hit the island last night.10. Jenny has got a(n)__________ watch, so she even wears it while swimming.

Complete the sentences, using the present continuous.1. What ______you______(eat)now?2. Why _____she______(carry)that umbrella?3. Tom______(not /sit)next to Lisa.4. The class _______(start)now.5._________you___________(text) your girlfriend at the moment?

下面叙述正确的是()。

A. 根轨迹增益的参数从零变化到无穷大时绘制的根轨迹称为参数根轨迹。
B. 开环增益的参数从零变化到无穷大时绘制的根轨迹称为参数根轨迹。
C. 除根轨迹增益或开环增益以外的其他参数从零变化到无穷大时绘制的根轨迹称为参数根轨迹。
D. 包括根轨迹增益 以外的其他参数从零变化到无穷大时绘制的根轨迹称为参数根轨迹。

零阶传感器的输出随时跟踪输入的变化,它对任何频率输入均无时间滞后。

A. 对
B. 错

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