A、 When you do work with cleaning agents,use breathing equipment.
B、 When you do work with cleaning fluid ,use breathing equipment.
C、 When you do work with cleaning fluid ,use breath equipment.
答案：A
A、 When you do work with cleaning agents,use breathing equipment.
B、 When you do work with cleaning fluid ,use breathing equipment.
C、 When you do work with cleaning fluid ,use breath equipment.
答案：A
A. Transfer the rod in the contrary directivity.
B. Remove the rod in the contrast direction.
C. Move the rod in the opposite direction.
A. 每一个点处的宽度和深度值不能小于 30。
B. 每一个点处的宽深值不能大于 30。
C. 每一个点处的宽深比不少于 30。
A. 这个笔记本电脑有三个备用部件。
B. 笔记本电脑有三个主要部分。
C. 这个螺钉有三个主要部分。
A. 基本上,作者可以使用字典中已批准的词汇作为核心词。
B. 在主要部分中,作者可以使用字典中已认可的词汇作为核心词。
C. 在基础部分中,作者可以使用字典中已核实过的词汇作为核心词。
A. For vocabulary,only main alternation are highlighted,minor alternations to many approved and not approved examples are not highlighted.
B. For wordlist,only major changes are highlighted,minor changes to various approved and not approved examples are not highlighted.
C. For vocabulary,only main alternation are prominent,minor alternations to many approved and not approved examples are not prominent.
A. That portion of the system is responsible for the fuel storage components in the system, comprising of storage tank,bag battery,ventilation system,battery and storage tank interconnection device,neck and cover of the wing filler,etc.
B. That portion of the system is used to store fuel,including integral tank sealing,bladder type cells,ventilating system,cell and tank interconnectors,over wing filler necks and caps,etc.
C. A portion in a system can store fuel.Covering storage tank sealing,bag battery,ventilation system,battery and storage tank interconnection device,overhead neck and cover of the wing filler,etc.
A. Clamps should be spaced at intervals not exceeding 24 inches.Clamps on wire bundles should be selected so that they have a snug fit without pinching wires.
B. Pins should be spaced at intervals not exceeding 24 inches.Pins on harness should be selected so that they have a snug fit without pinching wires.
C. Pins should be spaced at intervals not exceeding 24 inches.Pins on harness should be selected so that they have a snug fit without scratching wires.
A. The associated warning light should illuminate after 30 seconds.
B. The associated caution light should deactivate after a duration of 30 seconds.
C. The caution light,regardless of its position,should turn off within 30 seconds.
A. 更换磨损超过最大限度的部件。
B. 更换部件,磨损已超过最小限度。
C. 拆卸元件,磨擦已超过最大限度。
A. Do not open the entry door if the wind-speed is dangerously high.
B. Do not open the cargo door unless there is dangerous wind.
C. Do not open the cargo door if the wind-speed is dangerously high.
