压裂泵的一级保养除各项检查项目外还应清洁（）、变速箱的外表。_爱下问搜题

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问题单项选择题

压裂泵的一级保养除各项检查项目外还应清洁（）、变速箱的外表。

A、柴油机

B、底盘

C、柱塞泵

D、轮胎

答案

参考答案：C

填空题

Questions 14-18

·Using the information in the text, complete each sentence 14-8 with an expression from the list below.
·For each sentence (14-18), mark one letter (A -G) on the Answer Sheet.
·Do not mark any letter twice.

A. different colors
B. hair follicles
C. dietary fiber
D. antioxidant activity
E. their cholesterol
F. hair loss
G. free radicals

Eating apples enables people to drop ______.

单项选择题

磺酸储罐出料泵适用型号是（）。

A.齿轮泵

B.离心泵

C.计量泵

D.喷射泵