K₂Cr₂O₇标准溶液(0.02000mol/L)对Fe₃O₄(M=231.45g/mol)的滴定度为()。
A.0.001389
B.0.002779
C.0.009262
D.0.004631
A.0.001389
B.0.002779
C.0.009262
D.0.004631
第2题
A.C(1/5 K₂Cr₂O₇)=2.5C(K₂Cr₂O₇).
B.5C(1/5 K₂Cr₂O₇)=C(K₂Cr₂O₇)
C.C(1/5 K₂Cr₂O₇)=C(K₂Cr₂O₇)
D.C(1/5 K₂Cr₂O₇)=5C(K₂Cr₂O₇)
第4题
A.v0=8,v1=4,v2=8
B.v0=7,v1=4,v2=7
C.v0=12,vl=4,v2=12
D.v0=11,v1=4,v2=11
第6题
A—make a contract
B—originals of the contract
C—copies of the contract
D—draft a contract
E—a written contract
F—contract terms (or contract clause)
G—contract life
H—to bring a contract into effect
I—break the contract
J—cease to be in effect
K—cancel the contract
L—alter the contract
M—contractual dispute
N—contract parties
O—contractual liability/obligation
P—contractual dispute
Q—contract law
36.()起草合同 ()失效
37.()合同上的争议 ()合同法
38.()合同规定的义务 ()撤消合同
39.()使合同生效 ()修改合同
40.()书面合同 ()合同条款
第8题
A.细长杆的σcr值与杆的材料无关
B.粗短杆的σcr值与杆的柔度无关
C.中长杆的σcr值与杆的柔度无关
D.中长杆的σcr值与杆的材料无关
第9题
A.int n;scanf("%d",&n);int a[n];
B.int n=10,a[n];
C.int a(10)
D.#define SIZE 10 <CR> int a[SIZE];