艉轴防蚀衬套磨损后，除采用光车修复外，还可采用（）。

【名词&注释】

蛋白质(protein)、染色体(chromosome)、区域内(intra-region)、不允许(not allow)

[单选题]艉轴防蚀衬套磨损后，除采用光车修复外，还可采用（）。

A. A．焊补
B. B．修磨
C. C．改变橡胶环的轴向位置
D. D．改变防蚀衬套轴向位置

查看答案&解析 查看所有试题

学习资料：

[单选题]YJ17/YJ19卷烟机上主要采用的带传动有三角带、（）、圆形带、平带等。

A. 同步齿形带
B. 活络带
C. 防滑带
D. 变速带

[单选题]桨叶上A区位于桨叶压力面0.4R以内范围，该区域内的缺陷一般不允许^{(not allow)}（）修理。

A. 有机胶黏剂
B. 无机胶黏剂
C. 金属扣合工艺
D. 焊补

[单选题]The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.

A. so a height
B. such a height
C. so high
D. such high

[单选题]The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of （） of different thickness.

A. shims
B. packing
C. glands
D. washer

[单选题]This used piston had been tested and approved as a spare part by the （） during last annual repair.

A. agent
B. shipchandler
C. surveyor
D. engineer

[单选题]For Vee-form engines, （） is shaped to given two slopping surface on which （） are placed at the correct relative angle to each other.

A. the bottom of the column；the cylinder blocks
B. the top of the column；the cylinder heads
C. the top of the column；the cylinder blocks
D. the bottom of the column；the cylinder head

[单选题]An electric heater built into some smaller diesel engines is used to （）.

A. raise lube oil viscosity for easier starting in cold weather
B. increase air inlet temperature
C. increase compression ratio
D. increase jacket water temperature for easier starting in cold weather

[单选题]A Kort nozzle is a(n)（）.

A. hollow tube surrounding the propeller used to improve thrust
B. nozzle attached to a firefighting hose
C. intake valve on a diesel engine
D. piston cylinder on a diesel engine

[单选题]如果细胞甲比细胞乙的RNA含量多，可能的结果是（）

A. 甲合成的蛋白质比乙多
B. 甲含的染色体比乙多
C. 乙合成的蛋白质比甲多
D. 甲含的DNA比乙

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