A、 The color of the bottom mark on the plate is amber.
B、 You can see the red bottom mark on the board.
C、 There is no color of the bottom mark on the board.
答案：B
A、 The color of the bottom mark on the plate is amber.
B、 You can see the red bottom mark on the board.
C、 There is no color of the bottom mark on the board.
答案：B
A. This compound can release poisonous fumes.
B. This compound can give off poisonous fumes.
C. This compound can give out poisonous fumes.
A. COMES
B. GOES
C. DISPLAYS
A. If the micro switch stops working, deactivate the procedure of the actuator to avoid the valve damage.
B. If the micro switch becomes unserviceable, do the activation procedure of the actuator to prevent damage to the valve.
C. Do the activation procedure of the actuator to prevent damage to the valve, unless the micro switch becomes unserviceable.
A. 变更一些词性的缩写,使其与标准缩写一致。
B. 一些词性缩写的变化与标准缩写一致。
C. 更新标准缩写使其满足一些词性缩写变更的要求。
A. 为安装调整位置和角度
B. 调整位置和安装的角度
C. 适应位置和安装的角度
A. It is urgent to establish the thorough maintenance procedure after designed and approved.
B. Once designed and approved, scheduled maintenance procedures must be built.
C. Once designed and approved, complete maintenance procedures must be set.
A. A gear pump supplies hydraulic fluid to the unit.
B. A centrifugal pump supplies hydraulic fluid to the unit.
C. A centrosymmetric pump supplies hydraulic fluid to the unit.
A. 发动机的涡轮包括涡轮喷嘴,涡轮转子,机匣等。
B. 发动机中包含涡轮的部分。包括涡轮喷嘴,涡轮转子,机匣等。
C. 发动机中包含涡轮的部分。包括发动机喷嘴,涡轮转子,机匣等。
A. You can calibrate all the compass systems at the same time.
B. You can fix all the compass systems at the same time.
C. You can calibrate all the magnetic needle systems at the same time.
A. 只有经过授权的人员方可以留在该区域
B. 只有经过改装的人员方可以留在该区域
C. 只有经过检验的人员方可以留在该区域
