Measures to imroving the theoretical head with infinite blade include
A: Increase impeller outer diameter
B: decrease impeller outer diameter
C: inrease rotating speed of impeller
D: decrease rotating speed of impeller
A: Increase impeller outer diameter
B: decrease impeller outer diameter
C: inrease rotating speed of impeller
D: decrease rotating speed of impeller
举一反三
- The forms of fluid motion in impeller include A: Circular motion B: Relative motion C: Vertical motion D: Absolute motion
- In order to keep the engine speed constant, the engine bleed will lead to（） A: EGT Increase B: EGT decrease C: Oil temperature decrease
- An expenditure results either in a(n) ( ) in the asset account or a(n) ( ) in a liability account. A: decrease, decrease B: increase, increase C: increase, decrease D: decrease, increase
- The purchase of office supplies on account will: （ ）. A: Increase an asset and decrease a liability B: Increase one asset and decrease another asset C: Increase an asset and increase a liability D: Decrease an asset and decrease a liability
- If the demand for orange juice is elastic, then as the price falls, quantity demanded for orange juice will ________ and total revenue for orange suppliers will ________. A: increase; increase B: decrease; increase C: decrease; decrease D: increase; decrease