A、decreased clearances between rotating parts
B、decreased slippage to the suction side of the pump
C、air binding in the discharge ports
D、erosion and excessive wear
更多“Operating a rotary pump at speeds in excess of design requirements could cause（）.”相关的问题
A、Reciprocating B、Centrifugal C、Rotary D、Gear
A、The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump B、Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight C、Rotary pumps occupy only one-half the space of reciprocating pumps D、Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
A、PFD上的气压调节旋钮（baro rotary knob）不在起作用 B、此时气压调节可通过MFD的旋钮来完成 C、PFD上的气压调节旋钮（baro rotary knob）仍起作用
A、master bushing B、kelly slips C、kelly bushing D、rotary bushing
A、reciprocating at the piston pin, rotary at the crank pin B、reciprocating at the crank pin, rotary at the piston pin C、straight reciprocation D、straight rotation
A、rotary；reciprocating B、up and down；fore and aft C、fore and aft；up and down D、up and down；rotary
A、rotary；reciprocating B、up and down；fore and aft C、fore and aft；up and down D、up and down；rotary
A、A. Format a partition, install device drivers, and install the operating system. B、B. Create a partition, format the partition, and install the operating system. C、C. Install the operating system, create a partition, and install device drivers. D、D. Install the operating system, install device drivers, and create a partition.
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