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【单选题】
零点电位器R35 的动触点开路,则仪表()。A.
不管加多少差压,仪表没有输出
B.
输出还是随信号的改变而改变,但数值不对
C.
仪表指示最大
D.
仪表只是为零
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皮皮学刷刷变学霸
举一反三
【单选题】What refers to the depth of a petroleum product in a tank ________．
A.
Innage
B.
Outage
C.
Thievage
D.
Ullage
【单选题】What does Shell plan to do?
A.
Shell plans to cooperate with PetroChina in Nanhai Petroleum Chemical project.
B.
Shell plans to cooperate with PetroChina in the north-east gas transmission project.
C.
Shell plans to cooperate with China National Offshore Oil in Nanhai Petroleum Chemical project.
D.
Shell plans to cooperate with PetroChina in the west-east gas transmission project.
【单选题】下列水溶液沸点最低的是( )。
A.
0.01mol·dm -3 NaNO 3
B.
0.01mol·dm -3 HAc
C.
0.01mol·dm -3 BaCl 2
D.
0.01mol·dm -3 C 6 H 12 O 6
【单选题】—________________ —They’re books.
A.
Are these English books?
B.
What’s this?
C.
What’re these ?
【简答题】看图写句子。 1. A: What are they doing? B: They're ____________. 2. A: What ___________? B: They're _____________. 3. A:______________________? B:_______________________. 4. A:_______________________? B:___...
【简答题】What is petroleum refining?
【简答题】看图写句子。 A: What's it doing? B: It's __________. A: What are ____________? B: They're _________________. A: What are ___________? B: They're _____________. A: What _____________? B: They're __________.
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