交流-直流发动机的交流部分实际上是()。A:交流发电机和直流发电机组成的机组 B:旋

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问题:

交流-直流发动机的交流部分实际上是()。

A:交流发电机和直流发电机组成的机组

B:旋转磁极式的直流发电机

C:旋转磁极式的交流发电机

D:无刷直流发电机

考点:民用航空器维修执照考试M12直升机飞行原理、结构与系统M12直升机飞行原理、结构与系统题库
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IV. Writing 30%

Section A Spelling 10%

Directions: Please use the new words you have learned in unit 4,5 in Module 2 and unit 1in Module 3.

66. A m__________ is a person who performs or writes music, especially as his/her job.

67. He does some part-time jobs to earn e__________ money.

68. Bright colors are a__________ to children.

69. The group of popular singers will give another two p__________ before leaving China.

70. Their diet c_________ a lot of fat in the form of butter, cream, chocolate.

71. Thomas took great pains to save the __________ girl, but didn’t succeed.(快淹死的)

72. He _________ the mistake she had made.(原谅)

73. Without your __________, no one can enter this room. (允许)

74. There was a short and __________ battle between the two army.(激烈的)

75. Children of six, seven years of age were __________ under ground in coal mines.(雇用)

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把2吨苹果分4次运往批发市场,平均每次运(  )
A.50千克B.5吨C.500千克
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青霉素皮内试验的进皮剂量是()

A.20U/0.1ml

B.250U/0.1ml

C.15U/0.1ml

D.0.25mg/0.1ml

E.50μg/0.1ml

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某轮某航次出港时的初稳性高度GM=0.56米,临界稳性高度GMc=0.75米,则该轮的()不满足<船舶与海上设施法定检验规则>对普通货船的基本稳性要求。

A.初稳性

B.动稳性

C.大倾角稳性

D.B,C都有可能

题型:单项选择题

1亩约等于()平方米。

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