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【单选题】
如图是元素周期表中关于硫元素的信息，下列有关硫元素的说法中错误的是（ ）A.
原子序数是16
B.
原子核内的质子数是16
C.
原子核外共有三个电子层
D.
相对原子质量是32.06g
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举一反三
【单选题】When you are _______ about which button to press on the complicated machine, you can either read the user's guide for guidance or fax us for specific instruction. Don't ______ the trial-and-error meth...
A.
insure; do
B.
ensure; make
C.
uncertain; try
D.
unsure; touch
【单选题】Which can adjust the feed speed when the CNC machine is running?
A.
Feed rate override switch
B.
Speed rate override swithc
C.
Emergency Stop
D.
Machine Lock
【单选题】a machine which can count money
A.
paper shredder
B.
stapler
C.
computer
D.
bill counter
【单选题】I’m afraid none of us can __________ the machine that has been imported from abroad.Which of the following is wrong?
A.
work
B.
run
C.
turn
D.
operate
【单选题】1 3 21 Stanford 1 1 23 14.0Normal 0 false false false EN-US JA X-NONE/* Style Definitions */table.MsoNormalTable{mso-style-name:"Table Normal";mso-tstyle-rowband-size:0;mso-tst...
A.
因为它比低级语言更抽象
B.
因为它比低级语言功能强大
C.
因为它比低级语言更复杂
D.
因为它是解释型语言
E.
因为它是编译型语言
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