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【单选题】
培养基经过高压蒸汽灭菌后,其PH值会( )。A.
不发生变化
B.
下降约0.2
C.
上升约0.2
D.
A、B、C都不对
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举一反三
【单选题】The connecting rod is attached to the piston by the .
A.
rod cap
B.
piston pin
C.
cap bolts
D.
cap bearing
【单选题】The connecting rod is attached to the piston by the _______
A.
piston rod
B.
piston pin
C.
cap bolts
D.
cap bearing
【多选题】Piston and connecting rod contains .
A.
piston
B.
flywheel
C.
cylinder block
D.
piston rings
E.
crankshaft
F.
oil pan
G.
connecting rods
【单选题】_____ is fully floating in both connecting rod small end and the piston skirt.
A.
The piston rod
B.
The cross head pin
C.
The gudgeon pin
D.
The crank-pin
【单选题】The connecting rod is attached to the piston by the _______
A.
piston pin
B.
piston pin
C.
cap bolts
D.
cap bearing
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