L（R）WINGLEAK的温度条件是：（）A、温度＞350度 B、温度＞90度 C、 发布时间：2019-08-01 04:14 │ 来源：www.tikuol.com 题型：单项选择题 问题： L（R）WINGLEAK的温度条件是：（）A、温度＞350度B、温度＞90度C、温度＞124度
题型：单项选择题 某元素的核素为X，其氯化物XCl2 1.11 g配成溶液后，需用20 mL 1 mol·L－1的AgNO3溶液才能把氯离子完全沉淀下来。已知X核素中有20个中子。(1)计算X的质量数为多少？(2)指出X元素在周期表中的位置。 查看答案
题型：单项选择题 Observe that for the programmer，as for the chef,the urgency of the patron(顾客) may govern the scheduled completion of the task，but it cannot govern the actual completion．An omelette(煎鸡蛋)，promised in two minutes，may appear to be progressing nicely．But when it has not set in two minutes，the customer has two choices—waits or eats it raw．Software customers have had (71) choices． Now I do not think software (72) have less inherent courage and firmness than chefs，nor than other engineering managers．But false (73) to match the patron’s desired date is much more common in our discipline than elsewhere in engineering．It is very (74) to make a vigorous，plausible，and job risking defense of an estimate that is derived by no quantitative method，supported by little data，and certified chiefly by the hunches of the managers． Clearly two solutions are needed．We need to develop and publicize productivity figures，bug-incidence figures，estimating rules，and so on．The whole profession can only profit from (75) such data．Until estimating is on a sounder basis，individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates． A．testersB．constructorsC．managersD．architects 查看答案
题型：单项选择题 以下关于外汇掉期交易的说法正确的是（）。A.买进100万美元的现汇，同时卖出100万欧元的现汇B.买进100万美元的1个月期汇，同时卖出100万美元的1个月期汇C.买进100万美元的现汇，同时卖出200万美元的1个月期汇D.买进100万美元的现汇，同时卖出100万美元的1个月期汇 查看答案
X，其氯化物XCl2 1.11 g配成溶液后，需用20 mL 1 mol·L－1的AgNO3溶液才能把氯离子完全沉淀下来。已知X核素中有20个中子。