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【单选题】
外啮合齿轮泵的特点有()A.
结构紧凑，流量调节方便
B.
通常采用减小进油口的方法来降低径向不平力
C.
噪声较小，输油量均匀，体积小，重量轻
D.
价格低廉，工作可靠，自吸能力强，多用于低压系统
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举一反三
【简答题】What is the maximum number for the class?
【简答题】根据句意选择与画线部分意义相同或相近且能代替的那一项。 1. Tom and Tony are twins . A. twin sisters B. brother twins C. twin brothers D. twin's brother 2. Grandma is over 80 years old. A. more than B. less than C. many than D. l...
【简答题】用am, is或are填空。 1．I _______ a boy. 2．What _______ this in English? 3．His name Tony. 4．How ______ you? 5．She _______ Helen. 6．I ______ Eric. 7. Alan and Tom______boys. 8. He ______ Bob Green. 9．Th...
【简答题】Fill in the blanks with am, is, or are to complete the sentences. (1) A: Hello, I 1 Tom. B: Hi, nice to meet you. (2) A: 2 you Michael? B : Yes, I 3 . (3) A: What 4 your name? B: My name 5 Paul. (4) A...
【简答题】The maximum number for the class is ______.
【判断题】下列句子是否正确: 1. Вырастить морской жемчуг значительно сложнее речного: в каждой морской раковине обычно одна жемчужина, а в каждой речной раковине обычно более десятка жемчужин. 2. Пуэр производится в про...
A.
正确
B.
错误
【简答题】阅读理解。 Tom: Hello, Tony. Would you like to go to the football match with Betty and me? Tony: Great idea. Is it in the afternoon or in the evening? Tom: It's on Saturday afternoon. Tony: Who are in the ...
【简答题】Fill in the blanks with am, is, or are to complete the sentences. A: Hello, I ____ Tom B: Hi, nice to meet you. A: _____ you Michael? B : Yes, I _____. A: What ______ your name? B: My name _____ Paul....
【单选题】the maximum electric output power of the power source is 3 Kw
A.
maximum temperature rise of the insulation material
B.
maximum input of kilowatts
C.
maximum input of horsepower
D.
maximum operating voltage
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