Stationary
Full floating
Semi-floating
Free rolling
第1题：
To reduce the weight of the reciprocating parts, pistons of high-speed engines are made considerably shorterThis results in __________.
A.less piston slap and quieter running
B.increased crankshaft bearing wear
C.slightly greater piston wear
D.decreased side pressures
第2题：
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?（）
第3题：
In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the
A.crosshead
B.crankpin
C.crank journal
D.gudgeon pin
第4题：
Which one of the following BEST describes Long Term File System (LTFS)?（）
第5题：
Which of the following is the correct arrangement of the data pairs in a T568B wire pattern?（）
第6题：
A. redundant
B. spanned
C. provisioned
D. converged
第7题：
Which of the following terms describes files and folders in sub-directories having the samepermissions as the root or parent directory?（）
第8题：
A. common forwarding class
B. forwarding equivalence class
C. equivalent class characteristics
D. forwarding class characteristics
第9题：
Which of the following describes the 25 or 9 pin connector with male pins on the back of a laptop computer?（）
第10题：
less piston slap and quieter running
increased crankshaft bearing wear
slightly greater piston wear
decreased side pressures