在速度控制回路中,执行元件的运动速度取决于油液的流量,因此要调节执行元件的运动速度就是要调节液体的流量。
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A big crowd gathered around the bus, almost _______ the traffic.
A. affecting
B. blocking
C. creating
D. mating
We need help from the other countries. But we do not _______ upon others for support.
A. engage
B. .base
C. strip
D. multiply
What time is the mail _______ on Saturday?
A. objected
B. outlet
C. delivered
D. starved
Food _______ is a big industry in this area.
A. projecting
B. promising
C. processing
D. president