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【单选题】
1992年,我国发现了三种元素的新的同位素。其中一种是Hg,质量数为208,质子数为80,它的中子数是
A.
80
B.
128
C.
208
D.
288
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参考答案:
举一反三
【判断题】( )数控系统中,指令G04在加工过程中是模态的。
A.
正确
B.
错误
【单选题】数控系统中,(    )指令在加工过程中是非模态的。
A.
G01、F    
B.
G41、G02    
C.
G04、G27
D.
G90、G94
【单选题】数控系统中 指令在加工过程中是模态的?
A.
G94
B.
G27
C.
G04
D.
G28
【简答题】 Matching: Find the synonym to the given words and expressions in Text A and put the corresponding LETTER before the NUMBER. COLUMN A COLUMN B 1. cruelty A. disappear 2. understandably B. promote for...
【单选题】数控系统中,()指令在加工过程中是模态的。
A.
G01
B.
G27、G28
C.
G04
D.
M02
【单选题】...to exploit the earth for sustenance — making the consequences, of unrestrained exploitation every bit as unthinkable as the consequences of unrestrained nuclear war...
A.
forbearance
B.
resemblance
C.
vigilance
D.
maintenance
【简答题】填空:翻译下列短语 1. exploit sb.’s talent for ______________ 2. be hard-pressed to do_______________ 3. sustain the attention of the public___________ 4. the flavor of the month__________________ 5. other tha...
【判断题】Susan is a clerk of Peago company. Watch video clip 1 and finish the True or False exercise. Trouble with joint venture partners.mp4 Susan is working on a contract to propose a joint venture with a Ja...
A.
正确
B.
错误
【简答题】Directions: Write the appropriate word or phrase in each space from the word bank. Change the form if necessary.accomplish exploit indicate illustrate demonstrate verify inspect investigate ...
【简答题】Matching: Find the synonym to the given words and expressions in Text A and put the corresponding LETTER before the NUMBER. COLUMN A COLUMN B 1. cruelty A. disappear 2. understandably B. promote force...
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